Embedded OEM Piezoresistive Transducer Manufacturer

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Features

SS121E27 series piezoresistive transducer features an all-welded stainless steel construction. It incorporates an integral media isolation diaphragm. The design eliminates the need for ‘O’-ring seals. It has a maximum pressure range of 1000 bar. The size of the housing and the pressure/screw connection can be designed according to the request.

SS121E27 series incorporates a high-performance piezoresistive silicon chip. This design ensures excellent working performance. The accuracy can be 0.25% F.S., offering improved reliability and significantly lower production costs. Two types of electrical connections, pins or wires, are optional. The SS121E27 series is ideal for pressure transmitters, switches, and digital pressure instruments.

Pressure ranges (Typical)

Vented gauge(set the atmospheric pressure as reference) (Unit: bar)

Range	-1.0 to 0	-0.35 to 0	-0.2 to 0	0 to 0.2	0 to 0.35	0 to 1.0
Range	0 to 2.5	0 to 4.0	0 to 6.0	0 to 10	0 to 16	0 to 25

Absolute(set absolute vacuum as reference) (Unit: bar)

Range	0 to 1.0	0 to 2.5	0 to 4.0	0 to 6.0	0 to 10	0 to 16
	0 to 25	0 to 40	0 to 60	0 to 100	0 to 160	0 to 200
	0 to 400	0 to 600	0 to 1000

Sealed gauge(set standard atmospheric pressure as reference) (Unit: bar)

Range	0 to 10	0 to 16	0 to 25	0 to 40	0 to 60	0 to 100
Range	0 to 160	0 to 200	0 to 400	0 to 600	0 to 1000

Parameters

Specifications

Power supply	1.5 mA DC (typical)	5 Volt DC, 10 Volt DC is on request
Zero output	0 ± 2 mV
Span output	100 ± 20 mV (typical)
Accuracy	0.25% F.S. (typical)
Measuring range	-1 to 0 bar, 0 to 0.1 bar … 1000 bar
Overload	2.0 × F.S. (< 250 bar);
Overload	1.5 × F.S. (≥ 250 bar); 1.2 × F.S. (1000 bar)
Temperature compensation	0 to 70 °C
Operating temperature	-20 to 100 °C
Storage temperature	-40 to 125 °C
Zero thermal error	≤ 0.02% F.S./°C
Bridge resistance	2.3 to 4 KΩ
Insulation	100MΩ/250VDC
Stability	≤ 0.2% F.S./Year

Constructions

Pressure connection	See “ordering information” in the data sheet
O-ring	All stainless steel structure, no elastomer seal / O-ring is used inside
Diaphragm	Stainless steel 316L	Tantalum, Hastelloy-C is on on request
Housing	Stainless steel 304	Stainless steel 316L is on request
Filling liquid	Silicone oil
Electrical connection	10 cm silicone sheathed wires	Kovar pins is on request

Drawings

Dimensions

pressure connection	SW	H (Pressure ≤ 400 bar)	H (Pressure > 400 bar)
G 18 inch	27 mm	29 mm	34 mm
G 14 inch	27 mm	32.5 mm	37.5 mm
G 1/2 inch	27 mm	32.5 mm	37.5 mm
G 3/4 inch	32 mm	34.5 mm	39.5 mm
G 1 inch	41 mm	36 mm	41 mm
1/8 inch NPT	27 mm	29 mm	34 mm
1/4 inch NPT	27 mm	31 mm	36 mm
1/2 inch NPT	27 mm	31 mm	36 mm
3/4 inch NPT	32 mm	36 mm	41 mm
M10 x 1.25	27 mm	32.5 mm	37.5 mm
M14 x 1.5	27 mm	32.5 mm	37.5 mm
M20 x 1.5	27 mm	32.5 mm	37.5 mm