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Data Sheet • Mann Series
A u x i l i a r y Powe r e d , S t r a i n G a u g e C o n d i t i o n e r
STG
The STG converts the signal generated by a
resistance bridge strain gauge to a standard
analogue signal format.
• Remote sensing bridge power supply
provides highly stable excitation voltage
• Can power bridges up to 4x350Ω at 10V
• Tare adjustment and test points to correct
for initial loading
• Front panel adjustment and test points
accurately set the bridge excitation voltage
• Highly accurate (0.1% of span)
• LED power indication
• AC or DC powered
• Removable, screw-type, terminal blocks
• Compact metal housing
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Australia
Weidmüller Pty Ltd.
43 Huntingwood Drive, Huntingwood
NSW 2148
Phone +61 (0) 2 9671 9999
Fax
+61 (0) 2 9671 9900
[email protected]
www.mannindustries.com.au
United Kingdom
Other countries
Weidmüller Ltd.
1 Abbey Wood Road, Kings Hill
West Malling, Kent ME19 4YT
Phone +44 1732-877032
Fax
+44 1732-873873
[email protected]
www.weidmueller.com
Weidmüller Interface GmbH & Co.
Postfach 3030
32720 Detmold
Phone +495231-14-0
Fax
+495231-14-2083
[email protected]
www.weidmueller.com
STG Strain Gauge Conditioner
General Technical Data
Input
Type
Resistance bridge strain gauge
Input span ranges
1mV to 700mV
Input impedance
1MΩ
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Bridge excitation voltage
Type
Remote sensing
Excitation voltage
5V or 10V
Ripple
less than 10mV p/p at full load
Drive capability
120mA @ 10V
(equivalent to 4 x 350Ω loadcells @ 10V)
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Connections
Output
Type
4-20mA, 0-20mA and 1-5V (selected by push-fi t jumpers)
Current ranges
0-20mA, 4-20mA into 0-1KΩ load
Voltage ranges
0-5Vdc, 0-10Vdc, 1-5Vdc (true voltage source to 20mA)
Ripple
< 20mV peak to peak at maximum load and span
Power supply
Terminal
Signal
1
Sense −
2
Sense +
3
Excitation +
4
Excitation −
5
Not Used
6
Type
AC or DC powered (as ordered)
7
Signal +
AC
110Vac at 47-63Hz (permissible range 100-132Vac)
240Vac at 47-63Hz (permissible range 200-264Vac)
8
Signal −
9
Not Used
DC
24Vdc (permissible range 20-28Vdc)
10
Neutral (−)
Power Usage
AC 3VA or 3W at 24Vdc
11
Live (+)
12
Not Used
Adjustments
Bridge Excitation
Voltage
Input signal
Type
20-turn potentiometers
13
Output +
Span
45-105% of nominal span
14
Output −
Zero
±10% of nominal span
Tare
±100% or 0-200% of input span
Bridge excitation
±10% of nominal voltage
Power Supply
Output signal
15
Not Used
16
Case
Earthing is via a stud on lower side of case
Note: only the power supply is isolated.
General
Linearity
Typically ±0.05% of span
Repeatability
±0.05% of span
Dimension drawing
Temperature drift
Typically 0.02% span/°C
Long term drift
0.1% per 10,000 hours
Frequency response
-3dB point = 5Hz, optional 1KHz
Response time
200 mS for 10-90% output change, optional 1ms
RIGHT HAND SIDE VIEW
96 mm
Insulation Co-ordination
Ports
Input & Output / Power Supply / Case
Rated Insulation Voltage
300Vrms
Overvoltage Category
III
Impulse Withstand
4kV (1.2 / 50)
Isolation
2 kV (between ports)
TOP VIEW
Environmental Conditions
46 mm
Operating temperature
0 to 60 °C
Storage temperature
–25 to +70 °C
Pollution Degree
2
Relative humidity
10–90% (non–condensing)
Effective depth :
120mm (Top Hat 35mm +/- 0.3, DIN 46277-3, EN 50022)
125mm (G - Rail 32mm +/- 0.3, DIN 46277-1, EN 50035)
To surface (including rail/mounting plate)
Housing
Type
Anodised Aluminium Enclosure with protective earth
Ordering Information
Dimensions
See diagram
0.45Kg
Type
(Model 1/2/3/4 - See key below)
Cat. No.
Weight
STG 10V/2mV/V/4-20mA/24Vdc
7940011671
Connection type
Plug in terminal blocks with screw connections
Approvals
STG (DC powered only)
Page 2
Mark
Standard
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E256486
CAN/CSA C22.2 No. 1010.1:92
UL61010-1: 2004
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LV Directive
EMC
EN50178:1998
BS EN 61326:1998 + A2
Note: For other ranges please specify STG/1/2/3/4 where:
1 - Bridge excitation voltage
2 - Bridge sensitivity
3 - Output signal format
4 - Power supply voltage
Subject to technical alterations without notice • Printed in Australia • 7940015659 • 06/2005
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