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What are the features of the BROMIC HT-1893 Digital Manometer?
The BROMIC HT-1893 Digital Manometer measures Gauge/Differential Pressure. It features 11 selectable units of measure: inH2O, psi, bar, mbar, Kpa, InHg, mmHg, ozin², FtH2O, cmH2O, and kgcm. Additional features include Data Hold and a disabled Auto Power Off function.
What are the functions of the buttons on the BROMIC HT-1893?
The meter has six buttons:
1. UNITS: Cycles through the available units of measure.
2. DIF: Toggles the differential pressure measurement mode.
3. HOLD: Freezes the current reading on the display.
4. ON/OFF (Power Icon): Turns the meter on or off.
A. REC: Activates the MAX/MIN/AVG recording mode.
B. BACKLIGHT: Turns the display backlight on or off.
What do the different icons and sections on the BROMIC HT-1893 display indicate?
The display has several indicators:
1. Hold Function: Indicates that the Data Hold function is active.
2. Differential Mode: Appears when the meter is in differential pressure mode.
3. Primary Data Screen: Shows the main pressure reading.
4. Record Mode: Appears when the MAX/MIN/AVG recording is active.
5. MAX/MIN/AVG: Indicates whether the maximum, minimum, or average reading is being displayed.
6. Low Battery Indicator: “BAT” appears when the battery is low.
7. Pressure Unit Indicator: Shows the currently selected unit of measurement (bar, ozin², psi, inHg, mbar, mmHg, KPa, Kgcm², inH2O, ftH2O, cmH2O).
8. Relative Time Clock: Displays the elapsed time in H/M/S (Hours/Minutes/Seconds) during Record Mode.
What are the measurement ranges and resolutions for the BROMIC HT-1893?
| Function | Range | Resolution | Function | Range | Resolution |
|---|---|---|---|---|---|
| InH2O | ±830 | 1 | Ozin2 | ±480.0 | 0.1 |
| Psi | ±30.00 | 0.01 | ftH2O | ±69.20 | 0.01 |
| Mbar | ±2068 | 1 | cmH2O | ±2109 | 1 |
| kPa | ±206.8 | 0.1 | Kgcm2 | ±2.109 | 0.001 |
| inHg | ±61.08 | 0.01 | Bar | ±2.068 | 0.001 |
| mmHg | ±1551 | 1 |
What are the general specifications for the BROMIC HT-1893 Digital Manometer?
| Display | Dual LCD |
| Accuracy | ±0.3%FSO (25°C) |
| Repeatability | ±0.2% (Max+/-0.5%FSO) |
| Linearity/Hysteresis | ±0.29% FSO |
| Response Time | 0.5 Seconds typical |
| Low Battery Indicator | Yes |
| Over Range Indicator | Err.1 |
| Under Range Indicator | Err.2 |
| Operating Conditions | 32°F to 122°F (0 to 50°C) |
| Storage Conditions | 14°F to 140°F (-1 to 60°C) |
| Power Supply | 1X 9V Battery (included) or External 9VDC |
| Standard Accessories | Pouch & Tubing |
How do I turn the BROMIC HT-1893 on and off?
Press the ON/OFF button to turn the power on or off. When turned on, the meter will perform a short self-test and will default to the settings used during the last operation.
How do I perform a zero adjust or offset on the BROMIC HT-1893?
Zero Adjust: Before use and without any fittings attached, press and hold the HOLD button for more than 2 seconds. The meter will reset and display “000” from right to left, after which 0.000 will be displayed, indicating the meter is zeroed.
Offset: If you want to offset the meter, press the DIF button while taking a measurement. Subsequent readings will show the difference between the new current measurement and the measurement that was on the display when the DIF button was pressed.
How do I use the Data Hold function on the BROMIC HT-1893?
To freeze the current reading on the display, press the HOLD button momentarily. The HOLD icon will appear on the upper left-hand side of the display. To return to normal operation, press the HOLD button again.
How do I use the Record (MAX/MIN/AVG) mode on the BROMIC HT-1893?
The MAX/MIN mode allows you to view the highest (MAX), lowest (MIN), or average (AVG) readings with a relative time stamp.
1. Press the REC button once. “REC” will appear on the display, and all other functions except Power and Backlight will be locked out. The relative time clock will also appear on the secondary display and start counting.
2. Press the REC button again. “MAX” will appear on the display, showing the maximum pressure recorded and the relative time it was recorded.
3. Press the REC button again to display the minimum “MIN” reading with the relative time.
4. Press the REC button again to display the average value “AVG” reading with the relative time.
5. Press the REC button again to continue recording MIN/MAX/AVG measurements.
6. To exit the MIN/MAX/AVG mode, press and hold the REC button for 3 seconds to return to normal operation.
How do I use the backlight on the BROMIC HT-1893?
Press the Backlight button to turn on the backlight. It will automatically turn off after 40 seconds.
How can I disable the Automatic Power OFF feature on my BROMIC HT-1893?
The meter will automatically shut off after 20 minutes to conserve battery life. To disable this feature, hold down the HOLD button while turning on the meter. An “n” will appear in the display, indicating that Auto Power OFF mode is disabled. The meter will return to normal operation when it is turned off and back on again.
How do I change the measurement units on the BROMIC HT-1893?
Press the UNITS button momentarily. The meter will cycle through the 11 available units of measure, as indicated by the cursor on the display.
What do the error codes on the BROMIC HT-1893 display mean?
An error message will appear on the display if the meter fails an internal diagnostic test. The codes are as follows:
Err. 1: The pressure value is over the range.
Err. 2: The pressure value is below the range.
Err. 3: During the DIF function, the differential pressure value is over range.
Err. 4: During the DIF function, the differential pressure value is below range.
When and how should I replace the battery in the BROMIC HT-1893?
When the battery power falls low, “BAT” will appear on the LCD. At this point, you should replace the 9V battery.
How to use the PDF below:
* Touchscreen: Swipe up/down with-in the PDF to scroll and pinch or spread with two fingers to zoom.
* Mouse: While your mouse is hovering over the PDF, use the mouse wheel to scroll and click on the – / + buttons at the bottom of the PDF to zoom.
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