31EP/EA and 32EP/EA SeriesExplosion Proof CSA Approved
 ATEX Approved
Oil & Gas equipment needs a pressure transducer that is reliable and able to withstandextreme environmental and pressure conditions. Gems Sensors explosion proof units
offer an alternative to high priced, unreliable alternatives. The 31EP and 32EP are
CSA approved explosion proof, and the 31EA/32EA carries the ATEX approval. They
all feature all stainless steel wetted parts, a broad selection of pressure connections
and a wide choice of electrical outputs—the 32 Series of each group provide higherproof pressures. Our manufacturing process includes the latest automated equipment,
producing consistent sensor performance.
The compact yet rugged construction of these units makes them ideal for installation
where space in a hazardous environment is at a premium.

Specifications

PRESSURE TRANSDUCERS
H-36

PerformanceLong Term Drift
0.2% FS/YR (non-cumulative)
Accuracy
0.25% FS
Thermal Error
31EP/EA±1.5% max., ±1% typical / 212°F (100°C)
32EP/EA±2% max.
Compensated Temperatures -40°F to +203°F (-40°C to +95°C)
Operating Temperatures-40°F to +203°F (-40°C to +95°C)
Zero Tolerance, Max.
0.5% of span
Span Tolerance, Max.
0.5% of span
Fatigue Life
Designed for more than 100 M cycles
Mechanical Configuration
Pressure PortSee under “How to Order,” last page
Wetted Parts
17-4 PH Stainless SteelElectrical Connection
See under “How to Order,” last page
Enclosure
IP67
Vibration
BSEN 60068-2-6 (FC) Sine (20G)
BSEN 60068-2-64 (FH) Random (14.1 Grms)
Shock
BSEN 60068-2-27 (Ea) (50G, 11ms)
Approvals
CSA (31EP/32EP)Class I, Division 1, Groups A, B, C and D
Class I, Zone 1 Exd IIC T4 Gb
Class I, Zone 1 AExd T4 Gb
ATEX (31EA/32EA)
Exd IIC T4 Gb (Ambient Temperature: -40°C to +95°C)

Individual Specifications
Voltage
Output (3-wire)
Supply Voltage
Source and Sinks
Current
Output (2-wire)
Supply Voltage
Maximum Loop
Resistance
RatiometricOutputSupply Voltage

0 V min. to 10 V max.
See under “How to Order,”last page1 Volt above full scale to30 V max @ 4.5 mA
2 mA
4-20 mA
8-24 Volts measured at theinput to the transducer terminals(Supply Voltage-8) x 50 ohms
0.5 to 4.5 V (Source and sink 2 mA)
5 Vdc ±10% @ 4.5 mA

EMC Specifications
Emissions Tests: EN61326-1:2006 and EN61326-2-3:2006
EN55011:2007
Radiated Emissions:30-230MHz 30dB µV/M @10M
230-1000MHz 37dB µV/M @10M
Immunity Tests: EN61326-1:2006 and EN61326-2-3:2006
EN61000-4-2:2009
Electrostatic Discharge: ±4Kv contact±8Kv air
EN61000-4-3:2006
Radiated Immunity:
10V/M 80-1000MHz
3V/M 1400-2000MHz
1V/M 2000-2700MHz
EN61000-4-4:2004
Fast Transients:±0.25, 0.5, 1Kv

Visit www.GemsSensors.com for most current information.

31EP/EA-32EP/EA Series / p1of4 / 6-NOV-14

SPUTTERED THIN FILM
Pressure Capability
Proof Pressure(x Full Scale)

Burst Pressure(x Full Scale)

31EP/EA

100-300 (7-20)

32EP/EA

31EP/EA

32EP/EA

3.00 x FS

40 x FS

500-1,500 (40-100)

20 x FS

3.00 x FS

2,000-6,000 (160-400)

10 x FS

2.00 x FS

10,000 (700)
15,000 (1,000)>60,000 PSI(4,000 bar)

2.50 x FS

Pressure Ports

0H

02

04

08
SAE
Dimensions
in Inches

0.57

0.37

0H =1/2"-14
1/2˝NPTNPT
2-3 TFFT*

0.28
0.430.63

0.43

1J = 7/16˝-20
UNF with
O-RingSAE J1926/2:7/16-20"HeavyDuty"

1/4"-18
OE =FEMALE
1/4˝-18NPTNPTInternal

1G = SAESchraeder
4 Female
7/16˝Schraeder
Deflator(Shallow)

18-20
1PNM

4C
2-3 TFFT*

18-204DNM

Torque

0.28

0.28

0.57

Fitting CodeTorque0.47

0.57

1P = 9/16-18 "Heavy Duty"
SAE J1926/2:9/16-18 "Heavy Duty"
18-20 NM

4C = 1/4˝-18
1/4"-18NPTF
NPTF Dryseal
2-3 TFFT*

01

MetricDimensions
in MM

77
11.5

0S = G1/8˝ A Stud (BS 5380 Port)G1/8˝ A Stud
30-35NM

4P

0.28
0.37

0.44

4D = 1/8˝-27
1/8"-27NPTF
NPTF Dryseal
2-3 TFFT*

05

12.5

1101 = G1/4˝-27
External
G1/4˝ External
30-35NM

ric

16.5

et

110K

M

13.5

7

ric

15.5

0A = G1/4˝-19
PT (JIS) or BSPT
1/4"-1930-35NM

et

ric

715.5MetM

74N = SAE
SAEJ1926/2:3/8-24
J1926/2:3/8-24
18-200ANM

1105 = G1/4˝
A Integral
Integral
G1/4"ASeal Seal
2T FaceFace
30-35 NMOL

0.37

77

12.5

10.5

4B = 1/4˝ Female
Deflator (Deep)(7/16UNSchraeder
with SchraederDeflator)
15-16 NM

4N

0.28

0S

Fitting CodeTorque

4B

0.28

0.43

0.55
04 = 7/16˝-20 UNF with 37° Flare
7/16"-20 UNF 37° Flare
15-16 NM

1G

0.28

0.5

0.57

NPTNPT
02 = 1/4"-18
1/4˝-18
2-3OETFFT*

08 = 1/8˝-27 NPT
1/8"-27
NPT
2-3 TFFT*
1J

0.28

Fitting CodeTorque0.28

0.28

Fitting CodeTorqueFitting Code

0.28

0.28

PRESSURE TRANSDUCERS

Pressure Range
PSI (Bar)

713.5

119.7

G1/2"A A 27A/F
4P = G1/2˝
30-35NMi

ISO =6149-2:M12x 1.5
OLM12 x 1.5
28-30 NM

2T = M12x1.5 HP Metal Washer Seal
ISO 6149-2:M12 x 1.530-35 NMOK
M14 x 1.5
ISO=6149-2:M14x 1.52-3 TFFT**NPT Threads 2-3 turns from finger tight. Wrench tighten 2-3 turns.
General Notes:
1. The diameter of all cans is 0.965˝ (24.5 mm)
2. Hex is 0.866˝ (22 mm) Across Flats (A/F) for deep socket mounting, except Fitting Code 4P which is 1.063˝ (27 mm).
3. O-Ring material, where applicable, is Viton®.

31EP/EA-32EP/EA Series / p2of4 / 6-NOV-14

Visit www.GemsSensors.com for most current information.

H-37

Cable-Out TypeCable
BLACK
WHITE

RED

PVC JACKET CABLE

1/2˝ NPT
2.2
560.88 AF
22inchmm

Code S
Wire Color

Voltage Mode

Current ModeRed

SupplySupplyBlack

GroundReturn

White

Vout

No Connect

Current Output Mode (Load Resistor Range)
1200

PRESSURE TRANSDUCERS
H-38

CUSTOMER LOAD RESISTOR (OHMS)

1100
1000900

MAXIMUM RESISTOR (RL)

800
700
600
500
400
300

MINIMUM RESISTOR (RL)

200
100089 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
CUSTOMER SUPPLY VOLTAGE (V)Minimum Resistor Value = 50*(+V – 24) for +V > 24V
Maximum Resistor Value = 50*(+V – 8) for +V > 8V

Visit www.GemsSensors.com for most current information.

31EP/EA-32EP/EA Series / p3of4 / 6-NOV-14

SPUTTERED THIN FILM
How to Order
Use the bold characters from the chart below to construct a product code
31EPB

200PG

Series31EP / 32EP - CSA Approved Pressure Transducer
31EA / 32EA - A
 TEX Approved Pressure Transducer
OutputB - 4-20 mA
C - 1-6 VN - 0.5-4.5 V
R - 0-5 V
T - 0.5-4.5 V RatiometricPressure Range – psi
100PG - 0-100 psiG
150PG - 0-150 psiG
200PG - 0-200 psiG
300PG - 0-300 psiG
500PG - 0-500 psiG
600PG - 0-600 psiG
750PG - 0-750 psiG

Pressure Range - bar
0007G - 0-7 barG
0010G - 0-10 barG
0016G - 0-16 barG
0025G - 0-25 barG
0040G - 0-40 barG
0060G - 0-60 barG
0100G - 0-100 barG

10CPG - 0-1,000 psiG
15CPG - 0-1,500 psiG
20CPS - 0-2,000 psiS
25CPS - 0-2,500 psiS
30CPS - 0-3,000 psiS
35CPS - 0-3,500 psiS
40CPS - 0-4,000 psiS
50CPS - 0-5,000 psiS
60CPS - 0-6,000 psiS
75CPS - 0-7,500 psiSH - 1-5 V
S - 0-10 V

10KPS = 0-10,000 psiS

02

SR

01
Cable Length
01 - 1 meter02 - 2 meters
03 - 3 meters
04 - 4 meters
05 - 5 meters
10 - 10 meters
Optional Restrictor
R - Restrictor
0 - No Restrictor
Electrical Connection
S - Explosion Proof Conduit 1/2˝ NPTPressure Port408 - 1/8˝-27 NPT External
02 - 1/4˝-18 NPT External
0H - 1/2˝ NPT04 - 7/16˝-20 External (SAE #4, J514)
1J - 7/16˝-20 External (SAE #4, J1926-2)
0E - 1/4˝-18 NPT Internal
1G - Schraeder SAE #4, 7/16˝ Internal
4B - 1/4˝ Female (7/16UN with Schraeder Deflator)
1P - SAE 6 (9/16˝-18 UNF 2A)
4C - 1/4˝-18 NPTF External (Dryseal)
4D - 1/8˝-27 NPTF External (Dryseal)
4N - SAE 3 (3/8˝-24 UNF External)

0160S - 0-160 barS
0250S - 0-250 barS
0400S - 0-400 barS
0600S - 0-600 barS
1000S - 1,000 barS2

European Threads
0S - G1/8˝ A Stud (BS 5380 Port)
01 - G1/4˝ External
05 - G1/4˝ External Soft Seal
0A - G1/4˝-19 PT (JIS) or BSPT
4P - G1/2˝ A 27A/F
0L - M12 x 1.5 (<1,000 bar, 15,000 psi)
2T - M12 x 1.5 (6g) (≥1,000 bar, 15,000 psi)
0K - M14 x 1.5 Straight

PRESSURE TRANSDUCERS

Notes:
1. For use with pull-up or pull-down resistors, contact factory.
2. Range 1,000 bar available with -2T pressure port only.
4. Pressure ports OE and 1G are NOT available with the Restrictor
option.

31EP/EA-32EP/EA Series / p4of4 / 6-NOV-14

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H-39