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668-4 | Differential pressure transmitter | range 0-2.5" w.c. | Dwyer Instruments

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Documents and manuals

Dwyer Instruments 668-4 Documents

Instruction Manual Series 668 Catalog Page 668 More Info

Overview

Details for 668-4

The 668-4 Pressure Transmitter from Dwyer Instruments is a highly accurate and reliable device designed to measure pressure ranges from 0 to 2.5 inches of water column ("WC). It features a rugged construction with a stainless steel diaphragm and a solid-state sensing element, ensuring precise measurements in industrial environments. The 668-4 Pressure Transmitter is designed for versatility, with multiple output options including 4-20 mA, 0-5 VDC, and 0-10 VDC. This makes it compatible with various data acquisition systems and control devices. The transmitter also offers high accuracy of 0.5% of full scale, ensuring precise readings even in demanding applications. This pressure transmitter is commonly used in HVAC systems, clean rooms, and laboratory applications where precise pressure measurements are critical. Its compact design and easy installation make it suitable for use in tight spaces and challenging environments. Our HVAC supply store is proud to offer the Dwyer Instruments 668-4 Pressure Transmitter at a competitive price, backed by our commitment to fast shipping and excellent customer service.

Series 668 Differential Pressure Transmitter

Ranges from 0 to 100" w.c., Overpressure Protection to 10 psig, ±1% Accuracy

Our low cost Series 668 Differential Pressure Transmitter is capable of measuring low pressures with a ±1% accuracy - ideally suited for proper building pressurization and air flow control. Transmitters can withstand up to 10 psig overpressure with no damage to the unit. Variable capacitance sensor design provides excellent sensitivity and long-term stability. Compact, lightweight design makes installation simple and easy. Units also feature reverse-polarity protection.

Calibration Option available under Accessories.

Product Applications

Variable air volume systems
HVAC
Building management

Good accuracy at low pressure ranges provides exceptional value for ensuring control and minimizing costly out of specification conditions
High overpressure rating eliminates possible damage to unit reducing unnecessary service time

Specifications

Series: 668 Differential Pressure Transmitter
Category/Type: Pressure
Type: Differential Pressure
Series: 668 Differential Pressure Transmitter
Service: Air and non-conductive gases.
Accuracy: ±1% FS (RSS); (includes non-linearity; hysteresis; and non-repeatability).
Temperature Limits: Operating: 0 to 150°F (-18 to 65°C); Storage: -40 to 185°F (-40 to 85°C).
Pressure Limits: 10 psig (0.69 bar).
Compensated Temperature Range: 0 to 150°F (-18 to 65°C).
Thermal Effects: 0.033% FS/°F (0.18% FS/°C).
Supply Voltage: 12 to 30 VDC.
Output: 4 to 20 mA; 2-wire.
Zero and Span Adjustment: ±1 mA; non-interactive.
Response Time: <60 msec.
Loop Resistance: 0 to 800 Ω.
Electrical Connection: Terminal strip.
Pressure Connection: 3/16" OD fitting for 1/4" ID tubing.
Housing: Fire retardant glass filled polyester.
Weight: 3 oz (85 g).
Agency Approval: CE.