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Strip Chart Recorder
![[image]](gifs/goerz-se120.gif)
Manufacturer: Goerz Metrowatt
Model: SE120
Description
Calibrated measuring ranges and continuously adjustable intermediate ranges
allow all values from 0.4 mV to 200mV, 10 mV to 250 V, 0.1 mA to 1A and temperatures from -50°C to +600°C to be recorded across the full chart width.
Specifications
| Voltage Measurement |
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| Voltage Accuracy | ± 0.5% of full scale |
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| Voltage Linearity | ± 0.25% |
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| Time Measurement |
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| Accuracy | ± 30 ppm at 25° C |
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| Temperature Influence | ± 70 ppm in the range 0 - 50° C |
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| Input Impedance |
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| 10mv-100mV-1V ranges | 1 G Ohms |
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| 10V-100V ranges | 1 M Ohms |
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| Miscellaneous |
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| Input Current | 10 nA maximum |
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| Maximum permissible overload | 250 V |
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| Recording width | 250 mm |
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| Scale | 0..100 linear, 20 divisions |
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| Dead Band | 0.3% max. |
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| Response Time | approx. 0.5 s |
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| Slewing Speed | approx. 50 cm/s |
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| Frequency Response | a sine function of 1 Hz |
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| Damping | According to DIN 43 782. Overshoot or rounding response
within ±1% of recording width. |
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| Recording Paper | Chart rolls of 270 mm width and 32 m length with free paper run-out. |
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Operating Instructions
- Connect the voltage to be measured to the sockets on the top of the instrument. If desired, a ground connected to the case of the instrument is on the back.
- The pen may be raised and lowered with the slide labelled PEN just to the right of the paper.
- Choose the appropriate voltage scale with the rotary switch to the right of the case. If in doubt, choose the largest possible value first.
- Adjust the zero voltage point with the small knob just below the voltage scale switch.
- The voltage scale is calibrated when the line on the small switch above the voltage scale one points to CAL. If it points to VAR then the voltage scale is continuously adjustable with the small knob in the upper right.
- Select the desired chart speed with the rotary knob on the left.
- The initial position of the chart may be adjusted with the switch labelled POS.
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keywords: voltmeter, voltage measurement device, time measurement device, frequency measurement device, electrical measurement device.
Document created Jun 12, 1996. Original author: Jeremy Bailin and Jaime Espinoza.
Last updated 06/27/96. Revised by David Harrison.