Dwyer Instruments SERIES 636D Catalog Page

#22

G

[44.45]

SERIES 636D

PRESSURE

FIXED RANGE DIFFERENTIAL PRESSURE TRANSMITTER

AWG SHIELDED CABLE

Explosion-Proof, 0.5% Accuracy

Series 636D Fixed Range Differential Pressure Transmitter can be used for
measuring pressures of liquids, gases & vapors. All available ranges have an excellent

0.5% FS accuracy with a 4-20 mA Output standard or optional 1-5 VDC output. The
NEMA 4 housing is an all 316 welded construction that is designed to withstand the

harshest environmental conditions. With all 316L wetted materials, this transmitter is
compatible with most media. These units are CSA approved explosion-proof for use in

the specied hazardous locations and meet NACE standards for off-shore applications.

FEATURES/BENEFITS

• NEMA 4X rated enclosure provides protection in harsh environments permitting

outdoor monitoring or in areas where dust and particulate matter exists

• Explosion-proof device for use in hazardous areas

• Versatile, high-accuracy device for liquid or gas supports designs requiring more
precise measurements in support of application

APPLICATIONS

• Pump differential pressure

MODEL CHART
Model

4 to 20 mA Out Range
636D-0

636D-1
636D-2
636D-3
636D-4
636D-5
636D-6
636D-7
636D-8

0 to 6 psid
0 to 15 psid
0 to 30 psid
0 to 60 psid
0 to 100 psid
0 to 150 psid
0 to 200 psid
0 to 300 psid
0 to 500 psid

• Critical process monitoring • Off shore applications

Model
1 to 5 VDC Out Range

636D-0-LP
636D-1-LP
636D-2-LP
636D-3-LP
636D-4-LP
636D-5-LP
636D-6-LP
636D-7-LP
636D-8-LP

0 to 6 psid
0 to 15 psid
0 to 30 psid
0 to 60 psid
0 to 100 psid
0 to 150 psid
0 to 200 psid
0 to 300 psid
0 to 500 psid

SPECIFICATIONS
Service: Compatible gases, liquids, or

vapors.

Wetted Materials: Types 316L SS.
Accuracy: BFSL: ±0.5% FS (includes
linearity, hysteresis, and repeatability).
Stability: ±1.0 FS/yr.
Pressure Limits: 3 x FS differential

pressure; Burst: 2500 psig.
Temperature Limits: Ambient operating:

-40 to 140°F (-40 to 60°C); Process
interface: -40 to 212°F (-40 to 100°C);
Storage: -40 to 212°F (-40 to 100°C).
Compensated Temperature Range: -20
to 160°F (-29 to 71°C).
Thermal Effect: ±2% FS/50°F
(reference to 77°F).
Power Requirements: 12-30 VDC
for 4-20 mA outputs; 8-14 VDC for 1-5
VDC outputs, both with reverse polarity
protection.

Output Signal: 4-20 mA DC or 1-5 VDC.

OPTIONS
Use order code: Description
NISTCAL-PT1 NIST traceable calibration certicate

24 INCHES LONG

1/2-14 NPT

FEMALE

PROCESS

CONNECTION

4-5/32
[105.4]

1-1/8
[28.5]

4-1/8 [104.7]

3/4-14 NPT FEMALE
CONDUIT THREAD

1-1/4 HEX

1˝ HEX TYPICAL

Zero and Span Adjustment: Fixed.
Response Time: 20 ms.
Loop Resistance: 900 Ω max @ 30

VDC for current outputs. For voltage
outputs, minimum lead resistance 50k
ohms.
Current Consumption: 4-20 mA for
current output models; 3 mA for voltage
output models.
Electrical Connections: 2 ft, 22 AWG

cable; 3/4˝ female NPT conduit.
Process Connections: Two 1/2˝ female
NPT.

Enclosure Rating: NEMA 4 (IP56).
Mounting Orientation: ±0.05 psi/90°

rotation from horizontal.

Weight: 1.8 lb (0.82 kg).
Agency Approvals: CSA approved

explosion-proof for Class I, Division 1,
Groups B, C, and D; Class II, Groups E,
F, and G; Class III.

Ø1-3/4
[44.45]

1-3/4

SS TA

1-5/16
[33.02]

Differential Pressure Transmitters,