Dwyer 608 - Manual

The Series 608 Differential Pressure Transmitter converts
positive, negative (vacuum), or differential pressures of clean, dry
air or other non-conductive, non-corrosive gases into a standard
two wire, 4-20 mA output signal. Several factory calibrated mod-
els are available with ranges from 0-0.1˝ (0-2.5 mm) w.c. up to 0-
25˝ (0-634.4 mm) w.c. All models employ a variable capacitance
transducer with a micro-machined, ultra thin silicon diaphragm
enabling precision measurement and control of very low differen-
tial pressures while withstanding a high static working pressure of
100 psig (6.89 bar). The Series 608 is FM approved intrinsically
safe for use in the specified hazardous locations when used with
an approved intrinsic safety barrier. It also features a NEMA 4X
enclosure that allows for indoor and outdoor installations. This
rugged housing design makes this transmitter ideal for use in
industrial and process plant environments.
INSTALLATION
1. Location: Select a clean location free of excess vibration where
the temperature of the unit will be between 0°F (-18°C) and 160°F
(71°C). Distance from the receiver is limited only by total loop
resistance. See “Electrical Connections”. The tubing supplying
pressure to the transmitter can be run practically any distance.
Long tubing lengths will not affect accuracy but response time will
be increased slightly.
Series 608 Differential Pressure Transmitter
Specifications - Installation and Operating Instructions
Bulletin E-60
DWYER INSTRUMENTS, INC.
Phone: 219/879-8000 www.dwyer-inst.com
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46361, U.S.A. Fax: 219/872-9057 e-mail: [email protected]
SPECIFICATIONS
Service: Clean/dry air and compatible gases.
Wetted Materials: Consult factory.
Accuracy: ±0.5% or ±0.25% full scale.
Stability: ±0.5% F.S./year.
Pressure Limits: 100 psig (6.89 bar); 15 psid (1.03 bar).
Temperature Limits: -20 to 185°F (-28 to 85°C).
Compensated Temperature Range: 0 to 160°F (-18 to 71°C).
Thermal Effect: 0.5% Accuracy: ±0.02% F.S./°F;
0.25% Accuracy: ±0.01% F.S./°F.
Power Requirements: 12 to 36 VDC (2-wire).
Output Signal: 4-20 mA DC.
Zero and Span Adustments: Potentiometers for zero and
span.
Response Time: 250 ms.
Loop Resistance: DC: 0-1045 ohms maximum.
Current Consumption: 4-20 mA.
Electrical Connections: Screw terminal: Two 1/2˝ female NPT
conduit.
Process Connections: Two 1/4˝ female NPT.
Enclosure Rating: NEMA 4X (IP65).
Mounting Orientation: Not position sensitive.
Weight: 2 lb (0.9 kg).
Agency Approvals: FM approved intrinsically safe for use in
Class I, Div. 1, Groups A, B, C, D; Class II, Div. 1, Groups E, F, G;
Class III, Div. 1 when wired with approved intrinsically safe barrier.
Entity parameters: V
max
= 36 VDC; I
max
= 250 mA; C
I
=12 nF; L
I
=0
mH.
1/4
[6.35]
3
[76.20]
2-11/16
[68.26]
4-1/2
[107.95]
3-1/4
[82.55]
5-1/32
[127.79]
1/2 NPT
TYP 2 PLACES
5/8
[15.88]
1-1/2
[38.10]
1/4 NPT
TYP 2 PLACES
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