The 118 is a Legacy product and is not recommended for new designs. The lead time for the 118 may be as long as 12 weeks and may require a minimum quantity order. Please call for availability.
The Sensoray Model 118 Smart A/D offers a
cost-effective way to acquire sensor data for any VME bus system. It
features 16-bit resolution from eight input channels, each individually
programmable for a different sensor type. Analog-to-digital conversion
is performed in under 22 milliseconds, providing a 45 channel per
second scan rate.
The 118 board plugs directly into a VME slot. Linearization, calibration, and sensitivity are software-programmable, eliminating trimpots and the need for board access. Sensor field wiring is accomplished with a 40-conductor flat cable and remotely mountable screw-termination board, either Model 7409TB or 7409TDIN with DIN mounting rail mounting hardware.
Calibration
The 118 automatically self-calibrates by measuring internal references. Reference data is stored in an EEPROM so that boards may be easily interchanged.
Signal conditioning is provided for thermistors, RTD's, strain and pressure gauges, resistance and voltage. Standard corrections for non-linear sensors is built in. Custom compensation can be downloaded.
Excitation
A pulsed constant-voltage source is provided for strain and pressure sensors. A pulsed constant-current source is provided for resistive sensors. Lead loss errors from RTD's, thermistors, and resistors are eliminated with the use of four-wire circuits.
An on-board microprocessor continually scans the active sensor channels. Each channel is amplified, digitized, filtered, converted to engineering units, and stored in on-board memory independent of the host CPU activity.
VME
The 118 board is available with 3U and 6U front panels. The board functions as a DTB slave (A16, D8) using two consecutive I/O ports.
Application Notes
Thermocouples | Lead loss errors | Typical sensor connections | Low-Level Programming of 618/19
Software and Manuals
The included SDK18 (32-bit DLL) software has a DLL for Windows 95/98/N.
A ready-to-go data acquisition program, QuickSense, is available as an option.
Specifications
| Input resistance |
100 Megohms |
| Max. input voltage |
63 VAC rms |
| CMMR |
95 db min |
| Max. command mode |
+/- 5 volts |
| A/D converter |
16-bit integrating |
| Conversion time |
22 mS per channel |
| A/D scan rate |
45 samples/sec |
| Operating temperature |
-25°C to 85 °C |
| VME interface |
A16, D8 |
| Input power |
5 volts at 100 mA | 12 volts at 35 mA |
| For Sensor Types, Resolution, Range and Codes click here |
Images and Mechanical Drawings
Prices
| Model 118-3U |
8 channel Smart A/D |
Please call for availability |
| Model 419-6U |
8 channel Smart A/D |
Please call for availability |
| Model 7409TB |
Small termination board (2 per 417 required ) |
Qty. 1 $65 |
Qty. 2-9 $59 |
| Model 7409TC |
Large termination board |
Qty. 1 $105 |
Qty. 2-9 $95 |
| Model 7409TDIN |
7409TC with DIN hardware |
Qty. 1 $140 |
Qty. 2-9 $125 |
| Model 7409C |
18” interconnect cable |
Qty. 1 $14 |
Qty. 2-9 $12 |
| Model 7409C1 |
1 meter interconnect cable |
Qty. 1 $28 |
Qty. 2-9 $25 |
| QuickSense |
Data Acquisition Software |
Qty. 1 $195 |
Qty. 2-9 $195 |
