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.

Calibration Option available under Accessories.

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Product Applications

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

Starting at $83.26

Ordering

Filter By

668B, 0 to 10 VDC

668B, 0 to 5 VDC

668B, 4 to 20 mA

668D, 0 to 10 VDC

668D, 0 to 5 VDC

668D, 4 to 20 mA

Bi-Directional Ranges with Conduit Cover

Standard Ranges with Conduit Cover

Grouped product items
Model	Description	Availability*	Price
668B-01-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 0.1" w.c.	1-3 days*	$213.20
668B-02-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 0.25" w.c.	5-6 Weeks*	$213.20
668B-03-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 0.5" w.c.	1-3 days*	$213.20
668B-03-2	Compact differential pressure transmitter, 0 to 10 VDC, 0 to 0.5" w.c.	5-6 Weeks*	$213.20
668B-05-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 2.5" w.c.	1-3 days*	$213.20
668B-05-3	Compact differential pressure transmitter, 0 to 5 VDC, 0 to 2.5" w.c.	5-6 Weeks*	$213.20
668B-08-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 25" w.c.	5-6 Weeks*	$213.20
668B-12-2	Compact differential pressure transmitter, 0 to 10 VDC, 0 to ±0.1" w.c.	5-6 Weeks*	$213.20
668B-12-3	Compact differential pressure transmitter, 0 to 5 VDC, 0 to ±0.1" w.c.	5-6 Weeks*	$83.26
668B-13-3	Compact differential pressure transmitter, 0 to 5 VDC, 0 to ±0.25" w.c.	5-6 Weeks*	$87.64
668B-15-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to ±1" w.c.	5-6 Weeks*	$94.95
668B-21-2	Compact differential pressure transmitter, 0 to 10 VDC, 0 to 0.2" w.c.	5-6 Weeks*	$90.57
668D-03-2	Compact differential pressure transmitter, 0 to 10 VDC, 0 to 0.5" w.c.	4-5 Weeks*	$90.57
668D-04-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 1" w.c.	1-3 days*	$213.20
668D-05-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 2.5" w.c.	1-3 days*	$213.20
668D-05-2	Compact differential pressure transmitter, 0 to 10 VDC, 0 to 2.5" w.c.	4-5 Weeks*	$90.57
668D-06-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 5" w.c.	1-3 days*	$213.20
668D-07-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 10" w.c.	1-3 days*	$213.20
668D-08-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 25" w.c.	1-3 days*	$213.20
668D-12-3	Compact differential pressure transmitter, 0 to 5 VDC, 0 to ±0.1" w.c.	4-5 Weeks*	$83.26
668D-13-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to ±0.25" w.c.	1-3 days*	$213.20
668D-13-3	Compact differential pressure transmitter, 0 to 5 VDC, 0 to ±0.25" w.c.	4-5 Weeks*	$90.57
668D-16-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to ±2.5" w.c.	1-3 days*	$94.95
668D-17-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to ±5" w.c.	4-5 Weeks*	$213.20
668D-18-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to ±10" w.c.	1-3 days*	$213.20
668D-21-1	Compact differential pressure transmitter, 4 to 20 mA, 0 to 0.2" w.c.	4-5 Weeks*	$213.20

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).

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

Support Library

Support Libary

Manuals

Instruction Manual

Catalog Pages

Series 668B/D Catalog Page

Drawings

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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Accessories

Model	Description	Availability*	Price
A-TC	Replacement protective terminal cover	5-6 Weeks*	$3.80