Series 668B/D Compact Differential Pressure Transmitters

Ranges from 0.1 to 100 in w.c., Overpressure Protection to 15 psig, ±0.8% Accuracy

Our low cost SERIES 668B/D Compact Differential Pressure Transmitters are capable of sensing differential gage pressure with ±0.8% FS accuracy, and converts this pressure difference to a proportional high level analog output for both unidirectional and bi-directional pressure ranges. These transmitters can withstand up to 15 psig overpressure with no damage to the unit. The compact, lightweight design makes installation simple and easy. Units are protected against incorrect wiring, and include a protective terminal cover.

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Product Applications

  • HVAC and VAV control
  • Clean rooms and isolation rooms
  • Duct static pressure measurement

Models & Ordering

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Model Description Usually Ships Price Order
668B-01-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 0.1" w.c. Same Day $134.00 Order
668B-02-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 0.25" w.c. Same Day $134.00 Order
668B-03-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 0.5" w.c. Same Day $134.00 Order
668B-04-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 1.0" w.c. Same Day $134.00 Order
668B-05-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 2.5" w.c. Same Day $134.00 Order
668B-06-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 5" w.c. Same Day $134.00 Order
668B-07-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 10" w.c. Same Day $134.00 Order
668B-08-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 25" w.c. Same Day $134.00 Order
668B-09-1
Ships: Consult Factory
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 50" w.c. Consult Factory $134.00 Order
668B-10-1
Ships: Consult Factory
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 100" w.c. Consult Factory $134.00 Order
668B-12-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to ±0.1" w.c. Same Day $134.00 Order
668B-13-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to ±0.25" w.c. Same Day $134.00 Order
668B-14-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to ±0.5" w.c. Same Day $134.00 Order
668B-15-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to ±1" w.c. Same Day $134.00 Order
668B-16-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to ±2.5" w.c. Same Day $134.00 Order
668B-17-1
Ships: Consult Factory
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to ±5.0" w.c. Consult Factory $134.00 Order
668B-18-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to ±10" w.c. Same Day $134.00 Order
668B-19-1
Ships: Consult Factory
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to ±25" w.c. Consult Factory $134.00 Order
668B-21-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 0.2" w.c. Same Day $134.00 Order
668B-22-1
Ships: Same Day
Price: $134.00
Compact differential pressure transmitter, 4 to 20 mA, 0 to 0.4" w.c. Same Day $134.00 Order

Can't find what you need? Build Your Custom Part. Use our Product Configurator

Specifications

Service:
Air and non-conductive gases.
Accuracy:
±0.8% FS.
Temperature Limits:
Operating: 0 to 170°F (-18 to 77°C); Storage: -40 to 185°F (-40 to 85°C).
Pressure Limits:
15 psig (1.0 bar).
Thermal Effects:
±0.03% FS/°F (±0.054% FS/°C).
Compensated Range:
From 40 to 170°F (4.4 to 77°C).
Power Requirements:
12 to 32 VDC.
Output Signals:
4 to 20 mA (2-wire), 0 to 10 VDC (3-wire), or 0 to 5 VDC (3-wire).
Zero Adjustment:
Accessible under the small terminal cover.
Electrical Connection:
Terminal strip.
Process Connection:
3/16" OD barbed brass for 1/8" ID push-on tubing.
Enclosure:
Stainless steel and PC+ABS alloy, UL 94 V-0 rated.
Weight:
4.0 oz (113 g).
Agency Approvals:
CE.

Features

  • Protection from 15 psi overpressure & incorrect wiring
  • High accuracy at low pressure ranges
  • Two package selections allows easy device mounting to best fit application pressure connections

Accessories

Model Number Description Usually Ships Price Order
NISTCAL-PT1 NIST traceable calibration certificate for pressure transmitters.NOTE: EQUAL CERTS WILL BE CHARGED PER UNITS PURCHASED. Less Than 1 Week $139.00 Order
A-TC Replacement protective terminal cover Same Day $1.75 Order

Model Chart

EXAMPLE 668 B 04 1 Series 668B-04-1-1 Differential Pressure Transmitter, front connection, 0-1” w.c., 4 to 20 mA
SERIES 668        
CONNECTION   B
D
    Front
Bottom
RANGE     01
21
02
22
03
04
05
06
07
08
09
10
12
13
14
15
16
17
18
19
  0 to 0.1” w.c.
0 to 0.2” w.c.
0 to 0.25” w.c.
0 to 0.4" w.c.
0 to 0.5" w.c.
0 to 1.0" w.c.
0 to 2.5" w.c.
0 to 5.0" w.c.
0 to 10" w.c.
0 to 25” w.c.
0 to 50” w.c.
0 to 100” w.c.
0.1-0-0.1” w.c.
0.25-0-0.25” w.c.
0.5-0-0.5” w.c.
1-0-1” w.c.
2.5”-0-2.5” w.c.
5-0-5” w.c.
10-0-10” w.c.
25-0-25” w.c.
OUTPUT       1
2
3
4 to 20 mA
0 to 10 VDC
0 to 5 VDC
 
 

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