Monocrystalline Silicon Differential Pressure Transmitter TY813

Overview

The TY813 series monocrystalline silicon pressure / differential pressure transmitter is a high-accuracy intelligent instrument that measures pressure, differential pressure, liquid level, flow and density, converting the measured value into a 2-wire 4–20 mA electrical signal (HART, RS485, 0–5 V and 0–10 V outputs selectable). Spans run from 0.1 kPa up to 40 MPa with reference accuracy up to ±0.05%, making it suitable for automatic control in industrial production processes.

The transmitter is built around a monocrystalline (single-crystal) silicon pressure sensor chip manufactured with silicon micro-machining (MEMS) technology. The circuit uses a microprocessor core with advanced digital isolation in a modular layout, giving extremely high anti-interference performance and stability. A built-in temperature sensor performs temperature compensation, improving accuracy, reducing temperature drift and providing high reliability with strong self-diagnostics. The fully sealed, all-welded sensor uses a dual-diaphragm overload protection design with high overload capability.

Operators can remotely calibrate, configure and monitor the transmitter via HART communication. The series covers eight model types — TY813TG, TY813DP, TY813GP, TY813-Y, TY813-Z, TY813LT, TY813S1 and TY813S2 — and is widely used in petroleum, chemical, electric power, metallurgy, water treatment, brewing and many other industries.

Features

• Industrial measuring instrument for differential pressure of liquids and gases; core technology is a monocrystalline silicon pressure sensor chip manufactured with silicon micro-machining (MEMS) technology
• Fully sealed, all-welded monocrystalline silicon pressure sensor; eliminates the influence of temperature and static pressure; dual-diaphragm overload protection design with high overload capability
• High-precision monocrystalline silicon sensing chip ensures accurate and stable measurement
• Outstanding anti-interference and anti-vibration capability, suitable for complex and harsh industrial environments
• High-quality materials and manufacturing for very high reliability; simple structure, easy installation — can be mounted directly on the process without additional supports or fixtures
• Specially suited to differential-pressure-derived measurements such as flow and liquid level

Specifications

Common parameters (all TY813 variants)

Parameter	Value
Measuring principle	Monocrystalline silicon (single-crystal silicon) sensor
Power supply	12–36 VDC (24 VDC typical)
Output signal	2-wire 4–20 mA, HART, RS485, 0–10 V, 0–5 V (selectable)
Ambient temperature	-20–75 °C
Response time	≤90 ms (digital refresh time 50 ms)
Protection rating	IP66 / IP67
Explosion-proof rating	Non-Ex; intrinsically safe Ex ia IIC T6 Gb; flameproof Ex d IIC T6 Gb (selectable)
Diaphragm material	316L stainless steel, Hastelloy C, tantalum (gold-plated diaphragm / 316L gold-plated optional)
Housing material	Aluminum alloy, 304 stainless steel, 316 stainless steel
Load characteristic	Current (2-wire): ≤ (supply voltage − 8 V) / 0.02 A; voltage (3-wire): >10 kΩ

TY813TG / TY813DP / TY813GP

Parameter	TY813TG (direct-mount, gauge)	TY813DP (differential)	TY813GP (single-port)
Application	Gas, liquid, steam pressure measurement	Gas, liquid, steam differential pressure	Gas, liquid, steam pressure
Measurement type	Gauge, absolute	Differential, micro differential	Gauge, absolute
Measuring range	Up to 40 MPa (see range code table)	Up to 10 MPa (see range code table)	Up to 10 MPa (see range code table)
Reference accuracy	±0.05%, ±0.1%, ±0.2%	±0.05%, ±0.1%, ±0.2%	±0.05%, ±0.1%, ±0.2%
Medium temperature	-40–120 °C	-40–120 °C	-40–120 °C
Process connection	M20×1.5, G1/2, 1/2NPT internal/external thread optional; other specs customizable	1/4NPT, 1/2NPT (with welded pipe adapter), other specs customizable	1/4NPT, 1/2NPT internal thread (with welded pipe adapter), other specs customizable
Overload limit	3× static pressure	40 MPa	40 MPa

TY813-Y / TY813-Z / TY813LT

Parameter	TY813-Y (capillary remote seal)	TY813-Z (direct flange)	TY813LT (LT single flange)
Application	High-temperature pressure, liquid level measurement	Level measurement of viscous and easily crystallizing media	Dust-proof, food and sanitary pressure / level measurement
Measurement type	Pressure / level	Pressure / level	Pressure / level
Measuring range	0–6 kPa to 40 MPa	0–6 kPa to 40 MPa	0–1 kPa to 40 MPa
Reference accuracy	±0.1%, ±0.2%, ±0.5%	±0.1%, ±0.2%, ±0.5%	±0.1%, ±0.2%, ±0.5%
Medium temperature	-40–150 °C (up to 420 °C)	-40–150 °C	-40–150 °C
Process connection	Flange, clamp	Flange, clamp	Flange, clamp
Overload limit	40 MPa	40 MPa	40 MPa

TY813S1 / TY813S2

Parameter	TY813S1 (remote single flange)	TY813S2 (double-flange differential)	TY813S2 (double-flange differential, vessel level)
Application	High-temperature pressure / level measurement	Level of viscous and easily crystallizing media	Differential pressure / vessel level measurement
Measurement type	Pressure / level	Differential / level	Differential / level
Measuring range	0–1 kPa to 40 MPa	0–6 kPa to 40 MPa	0–25 kPa to 4 MPa
Reference accuracy	±0.1%, ±0.2%, ±0.5%	±0.1%, ±0.2%, ±0.5%	±0.1%, ±0.2%, ±0.5%
Medium temperature	-40–150 °C (up to 420 °C)	-40–150 °C	-40–150 °C
Process connection	Flange, clamp	Flange, clamp	Flange, clamp
Overload limit	40 MPa	40 MPa	40 MPa

Ordering Code

TY813T — intelligent pressure transmitter (direct-mount type)

Item	Code	Description
TY813T	—	Intelligent pressure transmitter
Type	G / A	G = gauge pressure; A = absolute pressure
Range code	1–9, 0	See range code table below
Output signal	E / S / R / V	E = standard 4–20 mA current output; S = 4–20 mA + HART; R = RS485; V = 0–10 V voltage output
Wetted parts (diaphragm)	S / H / T / G	S = 316L; H = HC-276 (Hastelloy); T = tantalum; G = 316L gold-plated. Threaded connection material: 316L
Process connection	0 / 1 / 2 / 3	0 = M20×1.5 external thread; 1 = G1/2 external thread; 2 = 1/2NPT external thread; 3 = 1/2NPT internal thread
Explosion protection	A / B / C	A = non-explosion-proof; B = intrinsically safe Ex ia IIC T6 Gb; C = flameproof Ex d IIC T6 Gb
Housing	1 / 2 / 3	1 = cast aluminum; 2 = 304 stainless steel; 3 = 316 stainless steel. Electrical interface M20×1.5 (default), 1/2NPT optional
Additional options	/xx	See additional options table (leave blank if not selected)

Range codes (TY813T)

Code	G (gauge) span range	G measuring range	A (absolute) span range	A measuring range
1	0–0.1~6 kPa	-6–6 kPa	/	/
2	0–40 kPa	-40–40 kPa	0–40 kPa	0–40 kPa
3	0–100 kPa	-100–100 kPa	0–100 kPa	0–100 kPa
4	0–250 kPa	-100–250 kPa	0–250 kPa	0–250 kPa
5	0–600 kPa	-100–600 kPa	0–600 kPa	0–600 kPa
6	0–1 MPa	-0.1–1 MPa	0–1 MPa	0–1 MPa
7	0–4 MPa	-0.1–4 MPa	0–4 MPa	0–4 MPa
8	0–10 MPa	-0.1–10 MPa	0–10 MPa	/
9	0–20 MPa	-0.1–20 MPa	/	/
0	0–40 MPa	-0.1–40 MPa	/	/

TY813 — intelligent differential pressure transmitter

Item	Code	Description
TY813	—	Intelligent pressure / differential pressure transmitter
Type	DP / DR / HP / GP	DP = differential pressure / DP flow transmitter; DR = micro differential pressure; HP = high static pressure differential; GP = pressure transmitter
Range code	1–9, 0	Same range coding scheme as TY813T above (G gauge / A absolute tables)
Output signal	E / S / R / V	E = standard 4–20 mA; S = 4–20 mA + HART; R = RS485; V = 0–10 V
Wetted parts	S / H / T / G	Diaphragm: S = 316L; H = HC-276; T = tantalum; G = 316L gold-plated. Clamping plate (cover flange) material: 316 SS; drain/vent valve: 316 SS
Process connection	0 / 1 / 2	0 = 1/4NPT internal thread; 1 = 1/2NPT internal thread; 2 = G1/2 internal thread
Explosion protection	A / B / C	A = non-Ex; B = intrinsically safe Ex ia IIC T6 Gb; C = flameproof Ex d IIC T6 Gb
Housing	1 / 2 / 3	1 = cast aluminum; 2 = 304 SS; 3 = 316 SS. Electrical interface M20×1.5 (default), 1/2NPT optional
Additional options	/xx	See additional options (leave blank if not selected)

Flange / remote-seal type (direct-mount and capillary remote versions)

Item	Code	Description
Flange type	Z / Y	Z = direct-mount type; Y = capillary remote-seal type
Flange type (level versions)	LT / S1 / S2	LT = direct-mount; S1 = single-flange capillary remote type; S2 = double-flange capillary remote type
Capillary length	-□□	00–20 m (fill 00 for direct-mount type). For S1/S2: H-side length 0–20 m (0 m = LT direct-mount, temperature ≤185 °C); L-side length 0–20 m (0 m = single-flange remote type, no flange on L side)
Fill fluid	A / B / C / D	A = DC200-1 silicone oil (-10~250 °C, 1.07 g/cm³); B = KN17 low-temperature oil (-90~120 °C, 0.914 g/cm³); C = KN3.2 high-temperature oil (0~380 °C, 1.1 g/cm³); D = coconut oil-M20 (-15~225 °C, 0.94 g/cm³)
Flange size — flat flange	P1–P7	DN25 (1 inch), DN32 (1.2 inch), DN40 (1.5 inch), DN50 (2 inch), DN65 (2.5 inch), DN80 (3 inch), DN100 (4 inch)
Flange size — extended (protruding) flange	T4–T7	DN50 (2 inch, insertion barrel Ø48 mm), DN65 (2.5 inch, Ø64 mm), DN80 (3 inch, Ø64 mm), DN100 (4 inch, Ø64 mm)
Flange size — flat+extended combination (S2)	Y1–Y4	DN50 (2 inch), DN65 (2.5 inch), DN80 (3 inch), DN100 (4 inch)
Diaphragm extension length (X2)	0–5	0 = 0 mm; 1 = 50 mm; 2 = 100 mm; 3 = 150 mm; 4 = 200 mm; 5 = 250 mm (select for P flat flange)
Diaphragm material	S / H / T / R / M / P / G	S = 316L; H = HC-276; T = tantalum; R = titanium; M = Monel; P = 316L PTFE-coated; G = 316L gold-plated
Flange material	1 / 2 / 3	1 = 304 stainless steel; 2 = 316 stainless steel; 3 = 2205 duplex steel
Insertion barrel material	F / S / P / D	F = no insertion barrel (select for P flat flange); S = 316L; P = 316L PTFE-coated; D = 2205 duplex steel
Flange seal face	1 / 2 / 3 / 4	1 = RF (raised face); 2 = RJ (ring joint) face; 3 = M (male) convex face; 4 = FM concave face
Flange standard	A / B / C / D / E	A = ANSI 150 (2.0 MPa); B = PN16 (1.6 MPa); C = PN25 (2.5 MPa); D = PN40 (4.0 MPa); E = PN64 (6.4 MPa)

Additional options

Item	Code	Description
Mounting bracket	A / B / C	A = L-type Q235 carbon steel bracket; B = L-type 304 SS; C = L-type 316 SS
Mounting bracket (DP types)	B1 / B2 / B3	B1 = pipe-mounting bent bracket; B2 = panel-mounting bent bracket; B3 = pipe-mounting flat bracket
Heat sink (cooling element)	Z / G / T	Z = medium temperature -40–150 °C; G = -40–230 °C; T = -40–420 °C (thread specification follows transmitter spec)
Process adapters (pressure types)	1–6	1 = M20×1.5 internal-thread welded adapter, 304; 2 = M20×1.5 internal-thread welded adapter, 316; 3 = G1/2 internal-thread welded adapter, 304; 4 = G1/2 internal-thread welded adapter, 316; 5 = 1/2NPT external-thread welded adapter, 304; 6 = 1/2NPT external-thread welded adapter, 316
Process adapters (DP types)	1–8	1 = 1/4NPT external thread to M20×1.5 external thread, Ø14 welded pipe adapter; 2 = 1/2NPT external thread to M20×1.5 external thread, Ø14 welded pipe adapter; 3 = Ø8 mm pneumatic quick connector; 4 = Ø10 mm pneumatic quick connector; 5 = Ø4 mm ferrule fitting; 6 = Ø6 mm ferrule fitting; 7 = Ø8 mm ferrule fitting; 8 = T-type M20×1.5 external thread fitting
Valve manifold	F / S	F = 2-valve manifold; S = 3-valve manifold
Diaphragm seal flange	—	Add diaphragm seal flange, secondary oil filling (refer to diaphragm seal flange selection)

Flange dimension reference (flat flange, mm)

Flange	Standard	D1	D2	D3	D4	T1	Bolt holes n	Bolt hole Ød
DN25	ANSI150	110	79.4	66	34	12.7	4	16
DN25	PN10/16	115	85	66	34	18	4	14
DN25	PN25/40	115	85	66	34	18	4	14
DN25	PN64	140	100	66	34	24	4	18
DN50	ANSI150	150	120.7	100	61	19.5	4	18
DN50	PN10/16	165	125	100	61	18	4	18
DN50	PN25/40	165	125	100	61	20	4	18
DN50	PN64	180	135	100	61	26	4	22
DN80	ANSI150	190	152.4	130	89	24.3	4	18
DN80	PN10/16	200	160	130	89	20	8	18
DN80	PN25/40	200	160	130	89	24	8	18
DN80	PN64	215	170	130	89	28	8	22
DN100	ANSI150	230	190.5	155	115	24.3	8	18
DN100	PN10/16	220	180	155	115	20	8	18
DN100	PN25/40	235	190	155	115	24	8	22
DN100	PN64	250	200	155	115	30	8	26

Matching dimension tables for extended (protruding) flanges (DN50/DN80/DN100) are available — contact us for the full drawing set.

Applications

• Petroleum and petrochemical processing
• Chemical industry
• Electric power plants
• Metallurgy
• Water and wastewater treatment
• Brewing and food/sanitary processes (LT type)
• Flow measurement via differential pressure (orifice/venturi)
• Liquid level measurement in vessels, including viscous and easily crystallizing media (flange / remote-seal types)
• High-temperature media measurement (capillary remote-seal types, up to 420 °C)

FAQ

Which output signals does the TY813 support?

The TY813 is a 2-wire 4–20 mA transmitter; ordering options include standard 4–20 mA (code E), 4–20 mA + HART (code S), RS485 (code R) and 0–10 V voltage output (code V). HART allows remote calibration, configuration and monitoring.

Can the TY813 be installed in hazardous areas?

Yes. Besides the non-Ex version, the TY813 is available as intrinsically safe Ex ia IIC T6 Gb or flameproof Ex d IIC T6 Gb, with IP66/IP67 ingress protection and cast aluminum, 304 or 316 stainless steel housings.

How do I select the right TY813 model for my application?

Contact us with your medium, measuring range, temperature and process connection; we respond within 24 hours with a complete ordering code, including flange/remote-seal options, fill fluid and mounting accessories.