PRESSURE TRANSDUCERS
G-36

890 Series – 3A Sanitary
Pressure Transducer

New!

 For Clean-In-Place (CIP) and Sterilize-In-Place (SIP) 0.20% Full Scale Accuracy
 No Liquid Fill Diaphragms
The 890 Series meets 3A sanitary design standards and is fully sealed to withstandexternal high pressure washdowns. These units are packaged in rugged weldedstainless steel housings and are exceptionally insensitive to vibration, shock andenvironmental extremes. A small size and tri-clover sanitary pressure fitting allow
direct mounting in most CIP and SIP installations. Other features include IC-based
circuitry, a 1/2” NPT conduit fitting and shielded cable with vent tube. Sealed screws
provide access to zero and span adjustments.

Specifications
Input
Pressure Range
Vacuum to 1000 psig
Proof Pressure
see ordering chart
Burst Pressure
see ordering chart
Fatigue Life
>1 million cycles
Performance
Output4-20 mA (2 Wire)
Supply Voltage (Vs)
18-38 VDC
Accuracy
0.20% FS
Thermal Error Zero
0.02% FS/°F (0.036%FS/°C)
Thermal Error Span
0.02% FS/°F (0.036%FS/°C)
Compensated Temperatures 20°F to 180°F (-7°C to +80°C)
Operating Temperatures-40°F to +260°F (-40°C to +125°C)
Storage Temperatures-65°F to +260°F (-54°C to +127°C)
Zero Tolerance
1% FS (±0.5 mA adjustable)
Span Tolerance
1% FS (±0.5 mA adjustable)
Maximum Loop Resistance (Vs-18) x 50
Response Time
10 ms
Mounting Effects
0.15% FS (.25% FS for 1.5˝ Tri-Clover)Mechanical Configuration
Pressure Port
1.5˝ or 2˝ Tri-Clover Sanitary Fitting
Wetted Parts
316 Stainless SteelElectrical Connection
1/2˝ NPT Conduit Fitting and Strain Relief with 15 ft. Cable
Enclosure
Stainless SteelVibration
10g Peak Sinusoidal, 50 to 1000 HzAcceleration
10g
Shock50gApprovals
Meets 3-A Sanitary Standards
Weight8 oz

www.gemssensors.com

Applications• Food Processing• Dairy & Beverage Processing• Pharmaceutical Processing• Sanitary Pipelines

How They Operate
A stainless steel diaphragm and an insulated electrodeform a variable capacitor. Pressure on the diaphragmalters the sensor’s capacitance, which is then detected
and converted to a highly accurate linear 4-20 mA
signal by electronic circuitry featuring Gems’ patented
charge-balance principle. Low hysteresis, very stable
operation and negligible clamping effect are inherent.

CAPACITANCE TYPE
Dimensions
2˝Fitting
0.588
14.93
2.00
DIA.
50.8

0.588
14.93
2.00
DIA.
50.8

1.155
29.34

Gems adheres to strict quality standards including
MIL-1-45208A and ANSI-2540-1.

1.155
29.34

®

®

MODEL
RANGE
SUPPLY
U.S. PAT. #3646539;3775719;

OUTPUT

RE. 30603;4054833

OPTION

2.565
65.15

MODEL
RANGE
SUPPLY
U.S. PAT. #3646539;3775719;

OUTPUT

RE. 30603;4054833

OPTIONCANADA PATENTED (BREVETE)CANADA PATENTED (BREVETE)

1974,1975,1976,1979

1974,1975,1976,1979

0.525
13.34
1.984
DIA.
50.39

0.204
5.18.112
2.84

2.272
57.70

2.516
DIA.
63.91

How to Order
Order as 890 Series Sanitary Pressure Transmitters. Specify Pressure Range (tabulated below),
Fitting Size and any Options. Use bold characters to construct a product code.
SELECT

PRESSURE TRANSDUCERS

1.5˝Fitting

C890 - 10 - 1.5 - * - * - * - *1. Series
C890 - 890 Series
2. Pressure Ranges
2˝ Tri-Clover Sanitary Fittings
Operating Range
ProofBurstpsig
psigpsigin. H2O
122.7
50
100
255.4
100
150
5
138.4
150
200
10276.815020015415.2
150
200
30
830.4
150
300
601160.8
180
400
100
2768.0200
400
1504152.0225
400-14.7 to 15 -407 to 415 150300

1.5˝ Tri-Clover Sanitary Fittings
Operating Range Proof
Burst
psig
psig
psig
30
1000
1200
60
1000
1200
100
1000
1200
300
1000
1200
500
1000
1500
1000
1250
2400
-14.7 to 151000
1200-14.7 to 451000
1200

3. Pressure Port
1.5 - 1.5˝ Tri-Clover Sanitary Fitting
2.0 - 2˝ Tri-Clover Sanitary Fitting
4. Options (*Add as suffix to base part code as needed)
715 - ±0.1% FS accuracy
884 - 20 Ra finish
911 - Etched metal stainless steel tag
Cable Length:816-825 - For cable lengths of 16 to 25 feet (15 ft. is standard).
Please specify cable length by code (e.g., 820 for 20 ft. cable).
Consult factory for cable longer than 25 feet.
Calibration Certificate:901 - 11-point calibration certificate.

www.gemssensors.com

G-37