Jewell Instruments C904 Specifications

Model C904 “Clinometer Pak 420”

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*Specifications subject to change without notice on account of continued development

; 1Resolution

calculated a

t 5 µamps;

2Linear scale factor

The model C904 “Clinometer Pak 420” uniaxial
clinometer delivers the same reliable
performance as the A904, but with 4-20mA
output. Units are available with longitudinal or
transverse axis configuration. The C904
operates as a 2-wire 4-20mA current loop, and
will drive signal over 1000m or more. Units also
include an on-board thermistor for temperature
measurement. Use the C904 with industrial
PLC’s, platform position and control,
geotechnical monitoring, or any application
where long cables are required.

High-Gain Standard Wide-Angle
Angular Range
Resolution
Repeatability
Scale Factor*
Non-Linearity 1% 2.5% 7%
Output 4-20mA, 2-wire Current Loop
Channels Tilt, Thermistor
Kz Coefficient (deg/C) 10-20 arcsec/C
Ks Coefficient (%/C) 0.03%/C
Time Constant 0.15 sec
Natural Frequency 10 Hz
Power (0.02 Ampere x R + 10 VDC) < Vs < 29 VDC
Environmental
Dimensions 120 x 80 x 60 mm, 0.5 kg (1.1 lb.)
Materials Diecast painted aluminum,
Cable 3m (10ft), 5-conductor + one overall shield, PVC jacket, tinned ends

10°

0.005° 0.01° 0.02°

0.01° 0.02° 0.04°

1.25°/mA 3.125°/mA 6.25°/mA

-40 to +85°C operation and storage. IP65

25°

50°

calculated from BFSL through calibration curve; 3Linearity calculated as max % deviation from BFSL. 0.05% linearity achievable using a polynomial

Ordering Code: Pin-out/Wiring:

Jewell Instruments LLC 850 Perimeter Road, Manchester, NH 03103

[e-mail] • www.jewellinstruments.com • Tel [phone]

Color Function

Red V+

Black GND

Blue Temp Excitation

Yellow/Orange Temp Out

White Temp Return

L00256 Rev. B

Model C904 “Clinometer Pak 420”

Dimensions:

Dimensions in inches (mm)

Circuit Diagram: Accessories:

Part No. Description

81439 Mounting bracket for vertical surfaces

84051 Mounting plate for horizontal surfaces

70369

62204

62202

6-conductor cable
(specify total length on order)
Optional 6-pin male receptacle
(installed on tiltmeter cable)
Optional 6-socket in-line plug
(mates to P/N 62204 connector)

Jewell Instruments LLC 850 Perimeter Road, Manchester, NH 03103

[e-mail] • www.jewellinstruments.com • Tel [phone]

L00256 Rev. B