About Waterproof Portable pH/Temperature Meter-991001
Features at-a-glance
Waterproof
- Designed to float if accidentally dropped in a tank
Expanded pH Range- pH range is from -2.00 to 16.00 pH
Automatic Two-Point Calibration- One or two-point calibration is automatic to two selectable buffer sets (4.01, 7.01 and 10.01 or NIST 4.01, 6.86, and 9.18).
Automatic Temperature Compensation- All readings are compensated for variations in temperature
- Temperature displayed in C or F along with pH reading
Stability Indicator- Meter displays a clock tag that will disappear when the reading has achieved stability
HOLD button- Freezes reading on the display to allow recording of measurement
BEPS (Battery Error Prevention System)- Meter will automatically shut off if there is not enough power to get an accurate measurement
Battery % level at startup
Low Battery Indicator- When the level is below 5%, the battery symbol on the LCD blinks to indicate a low battery condition.
Auto-Off- Meter automatically shuts off after 8 minutes of non-use to maximize battery life
| pH Range | -2.00 to 16.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | 0.02 pH |
| pH Calibration | automatic, at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18) |
| Temperature Range | -5.0 to 80.0C / 23.0 to 176.0F |
| Temperature Resolution | 0.1C / 0.1F |
| Temperature Accuracy | 0.5C (up to 60C); 1.0C (outside) / 1F (up to 140F); 2.0F (outside) |
| Temperature Compensation | automatic from -5.0 to 80.0C (23 to 176F) |
| Electrode/Probe | HI1296D pre-amplified pH probe with internal temperature sensor, DIN connector and 1 m (3.3) cable (included) |
| Battery Type/Life | 1.5V (3) AAA / approximately 1200 hours of continuous use; auto-off after 8 minutes of non-use |
| Environment | 0 to 50C (32 to 122F); RH max 100% |
| Dimensions | 152 x 58 x 30 mm (6.0 x 2.3 x 1.2) |
| Weight | 205 g (7.2 oz.) |
| Ordering Information | HI991001 is supplied with HI1296D pH probe with internal temperature sensor, HI70004 pH 4.01 buffer sachet (20 mL), HI70007 pH 7.01 buffer sachet (20 mL), HI700601 electrode cleaning solution sachet (2 x 20 mL), batteries, instructions, and rugged carrying case. |
Precise Measurement in Any EnvironmentThis meter is ideal for professionals requiring reliable pH and temperature measurements in various settings, including challenging outdoor and laboratory environments. Its waterproof IP67-rated casing and ergonomic design withstand harsh conditions, while the dual-level LCD ensures clear visibility of measurements. The device functions from 0 to 50C, with up to 100% relative humidity, catering to a broad range of applications.
Automatic Calibration and User-Friendly OperationOffering automatic one- or two-point calibration, the meter simplifies setup and ensures accuracy for each use. The push-button controls enable straightforward operation, while built-in features such as the HOLD function and low battery indicator enhance efficiency. Automatic temperature compensation further guarantees precise readings across its wide temperature range.
Built for Durability and Extended UseConstructed with ABS plastic and a robust glass electrode, the waterproof meter is designed for longevity. Its replaceable HI 1290D pH electrode extends the device's lifespan, and the auto-off feature conserves battery power. With a weight of just 1.5 kg and compact dimensions, the meter is highly portable for on-the-go professionals.
FAQ's of Waterproof Portable pH/Temperature Meter-991001:
Q: How do I calibrate the Waterproof Portable pH/Temperature Meter-991001?
A: Calibration is simple and automatic, allowing for one or two-point calibration. Just immerse the replaceable HI 1290D electrode in the appropriate buffer solutions and follow the on-screen prompts to complete the process. This ensures high accuracy for both field and laboratory measurements.
Q: What is the benefit of automatic temperature compensation (ATC) in this meter?
A: Automatic temperature compensation enables accurate pH readings across a wide temperature span (-5.0 to 105.0C), eliminating the need for manual adjustments. This increases reliability for users working in fluctuating or extreme temperature environments.
Q: When should I replace the HI 1290D pH electrode?
A: The HI 1290D pH electrode should be replaced when you notice unstable readings or the calibration cannot be completed successfully. Regular replacement ensures continued accuracy, especially if the device is frequently used in harsh or dirty samples.
Q: Where can this device be effectively used?
A: The meter is suitable for both field and laboratory applications, thanks to its waterproof IP67 rating and robust design. It performs reliably anywhere between 0 and 50C with up to 100% relative humidity, making it ideal for outdoor testing, water treatment facilities, research labs, and industrial environments.
Q: How long does the battery last and what type does it require?
A: The device is powered by 3 x 1.5V AAA batteries, providing approximately 1200 hours of continuous use. The built-in low battery indicator notifies you when it is time to replace the batteries.
Q: What procedures help maximize the meters' performance and accuracy?
A: To ensure optimal performance, regularly calibrate the meter, replace the HI 1290D pH electrode when necessary, clean the probe after each use, and allow the device to auto-off when not in use to conserve battery power.
Q: What makes this meter advantageous compared to standard pH meters?
A: Its waterproof design, automatic temperature compensation, easy push-button operation, HOLD function, and replaceable probe offer superior durability, usability, and reliability over standard pH meters, especially in demanding or mobile environments.