User Manual

2.7 Supplying power from the Model 9687 Probe Power Unit
41
The optional Model 9687 Probe Power Unit can be used to supply power to our
optional clamp-on and differential probes.
Probe models compatible with the Model 9687 Probe Power Unit
• 3273, 3273-50, 3274, 3275, 3276 Clamp-On Probes
• 9322 Differential Probe (using Model 9248 Power Cord)
9687 Probe Power Unit Specifications
2.7 Supplying power from the Model 9687 Probe
Power Unit
The power output connectors on the Model 9687 are especially designed for our
clamp-on and differential probes. To avoid damage, do not use the power supply
for any purpose other than supplying power.
There are limits to how many probes can be used with a single Model 8860 or
8861 with a 9687 installed.
Avoid exceeding the quantities in the following table for all probes to be used.
When mixing probe types, the lower quantity of usable probes applies.
Probe Usable Quantity
3273 Clamp-On Probe 8
3273-50, 3274, 3276 Clamp-On Probe 6
3275 Clamp-On Probe 5
9322 Differential Probe 8
Accuracy is specified at 23±5°C and 20 to 80% RH, 30 minutes after power on
No. of powered channels 8
Compatible probes 3273, 3273-50, 3274, 3275, 3276, 9322
Rated output voltage ±12 V
Rated output current ±3 A (total for all channels)
Operating temperature and
humidity
0 to 40°C (32 to 104°F), 20 to 85% RH (non-condensating)
Storage temperature and
humidity
-10 to 50°C (14 to 122°F), 20 to 90% RH (non-condensat-
ing)
Operating
environment
Compatible with Models 8860/ 8861
Dimensions Adds approx. 18.2 mm (0.72”) (D) to dimensions of Models
8860/ 8861
Weight Adds approx. 570 g (20.1 oz.) to the weight of Models 8860/
8861
Supported Models Model 8860 Serial Nos. 051040422 and above
Model 8861 Serial Nos. 051040432 and above
Connect the power cables from the probes to
the output connectors of the Model 9687
Probe Power Unit.
Power Output
Connector
Connections