The display banding, band, works from a different approach. The value en- tered is the amount of digit movement allowed before the display should be updated. With a band setting of 2, the value must move 2 counts up or down in the rightmost position as compared to the current display to cause the display to update.
NOTE: The two previous features can finely or coarsely stabilize the display and remove the pops and jitters typically found when monitoring a power line. The adjustment of this setting only filters what is displayed. The actual raw signal is evaluated against the setpoint and will go into alarm even if the display were set for maximum filtering and gave no indication of nearing the setpoint. Use hysteresis on delay in SP menu to slow relay action.
The Brit( Brightness) of the display is adjustable to allow for dimming in low light applications or for intensity matching with other equipment. The default is set to the brightest setting (5).
ICE (Zero or Null) Using ICE allows the user to grab a running offset and zero to it. A running offset can be useful for monitoring the tolerance to a value instead of the value, cancelling lead error in measurement or removing some signal difference in a measurement. Once ICE in enabled in the menu (ICE = ON), the device will wait until the user presses S and T . At that point, the unit will grab the current value and offset the display to zero. By choosing “hold” in the ICE menu the ICE value can then be saved to a more permanent location. No new ICE can be be taken, but the value will noy be lost if power fails.
NOTE: Be aware that introducing a ICE value will change the setpoint thresh- olds and erase any previous Hi Lo readings.
HILO (Min/Max) allows the user track the history of the readings on the dis- play. By pressing S, the unit will momentarily display the highest value it has reached after last being reset. By pressing T, the unit will momentarily display the lowest value it has reached after last being reset.
9.3Output Control
An optional analog outputs is available.
The analog output is a current or voltage that represents an equivalent range of signal on the input. Analog output can be purchased as
Setting the limits (LIM). The ends of the analog output range (4 & 20 or 0 & 10) can be set or ‘pegged’ to and display value within the range of the meter.
Example: The Hawk 3 is purchased as a standard 200 volt meter. The analog output is configured, by default, for HI=100.0 and LO=0.
When the display reaches 100 volts, the analog output would be 20mA. When the display reaches 0 volts the analog output would be 4mA.
The Hawk3 is purchased as a process meter 4 – 20 mA input which will dis- play
1.INTRODUCTION
1.1General Description
The Simpson Electric Hawk 3 Advanced Digital Panel Meter/Controller has 4- digit display. All LEDs are 7 segment and offer 5 brightness levels. The high quality instrument has user programmable parameters that are all set from the front panel in easy to understand terminology. The display also shows acti- vated set point indicators (up to four). The keypad buttons have audible and tactile feedback to prevent keystroke errors.
1.2.Specifications
Display: |
| Specifications |
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Type: |
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Quantity: |
| 4 |
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Height: |
| 0.56” (14.2mm) |
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Decimal Point: |
| None |
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| Non Programmable |
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Brightness: |
| 5 settings |
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| User Programmable |
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| Display Reads EEEE Indicating Maximum Value | ||||
| Display Reads | ||||
Alarm Indicators |
| 4 LED indicators For up to 4 Independent Setpoints | |||
Sensor Break: |
| Display reads EEEE |
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(Burnout) |
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Power Requirements: |
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AC Voltages: |
| 85 to 250 VAC/120 VAC @ 7W | |||
DC Voltages: |
| 9 to 36V DC @ 10W |
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Accuracy: |
| All measurements are at 25° C and measured as | |||
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| percent of reading. |
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Unit Type |
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| Accuracy |
| Temperature Range |
RTD PT100 |
| .2%. +/- 2 Count |
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J |
| .2%. +/- 2 Count |
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K |
| .2%. +/- 2 Count |
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E |
| .2%. +/- 2 Count |
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T |
| .2%. +/- 2 Count |
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Environmental |
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Operating Temperature. | 0 to 50°C |
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Storage Temperature. |
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Relative Humidity: |
| <85% |
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Ambient Temperature: | 25°C |
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Temperature Drift: |
| ±100 ppm/C°±0.05dgt/°C | |||
Warm up Time: |
| 10 minutes |
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Noise Rejection |
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NMRR: |
| 60dB @ 50/60 Hz |
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CMRR: |
| 100 db @ 50/60 Hz |
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A to D Conversion |
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Technique: |
| Successive Approximation with oversampling | |||
Sample Rate: |
| 10 Conversions per second | |||
Display Rate: |
| User Programmable from 1/minute - 8/second | |||
20 | 5 |