HM Digital HydroMaster HM-500 User Manual
USER’S GUIDE
HydroMaster
HM-500
TABLE OF CONTENTS
1. INTRODUCTION ..................................................................................... 2
A. Overview ................................................................................................. 2
B. What’s Included ....................................................................................... 2
C. Housing Description ................................................................................. 2
D. Specification ............................................................................................ 3
E. LCD Display ............................................................................................ 4
F. Switch and Keypad Controls ...................................................................... 4
G. Icon Description ...................................................................................... 5
2. pH CALIBRATION, CARE & MAINTENANCE .................................... 6
A. pH Information & Maintenace .................................................................... 6
B. pH Operation ........................................................................................... 6
C. pH Calibration .......................................................................................... 7
3. EC/TDS CALIBRATION & MAINTENANCE ........................................ 8
A. EC/TDS Basic Information .......................................................................... 8
B. EC/TDS Maintenance ................................................................................. 9
C. EC/TDS Operation .................................................................................... 9
D. EC/TDS Calibration ................................................................................. 10
E. EC/TDS Temperature Reading Calibration ................................................... 12
4. DATA STORAGE ................................................................................... 13
A. Saving Your Readings ............................................................................. 13
B. Recalling Saved Readings ........................................................................ 13
A. Delete All Saved Data ............................................................................ 13
5. ALARM SETTINGS ............................................................................... 14
6. ALARM SOUND & DELAYING YOUR ALARM ............................... 15
7. ALARM SETTING DEFAULT VALUE DATA
....................................... 15
8. CLEARING SAVED DATA .................................................................... 16
9. BATTERY CHARGING INSTRUCTIONS
............................................ 16
10. WARRANTY ........................................................................................ 17
11. CONTACT INFORMATION ............................................................... 18
1
1. INTRDUCTION
A. Overview
Thank you for purchasing the HM-500 (HydroMaster), by HM Digital.
The HM-500 monitors pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS)
and temperature with very high accuracy. This instrument can be calibrated with
various buffer solutions, and is equipped with automatic buffer recognition for user
convenience. The touch-screen LCD makes it user-friendly, and features automatic
light detection making it easy to view in dark environments.
B. What’s Included
ㆍ1 HydroMaster Monitor
ㆍ1 Wall mount bracket
ㆍ1 EC/TDS/Temp Sensor
ㆍ1 PH Probe
ㆍ1 USB Power adapter & cable
ㆍ2 Sensor holding clips
ㆍ1 PH-STOR, PH-4, PH-7, C-1000ppm liquid packet
ㆍ1 User’s guide
C. Housing Description
Power Button
1.LCD
Alarm
Upper Stand
Lower Stand
EC/TDS Cable Insert
pH Cable Insert
USB Power Insert
Auto Backlit Sensor
2
D. Specifications
1. Measurement Range
• pH: 0.00 - 1pH 4.00
• Temperature: 0 - 55 °C / 32 - 130 °F
• TDS: 0 - 9999 ppm / 0 - 10.00 ppt
• EC: 0 - 9999 µS / 0 - 20.00 mS
2. Automatic Temperature Compensation Range (ATC)
• ATC: 0.0 - 60.0 °C
3. Accuracy
• pH: ± 0.1 pH
• Temp: ± 1 °C / ˚F
• EC/TDS: ± 2 %
4. Measurement Scales
• pH: pH
• Temp: °C / °F
• TDS: ppm & ppt (NaCl) 0.5 scale / ppm & ppt (442™) 0.7 scale
• EC: µS / mS
5. Resolution
• pH: 0.1 pH
• Temp: 0.1°C / 0.1 °F
• TDS: ppm: 0.1ppm (0 - 99.9ppm) / 1 ppm (100-999ppm) / 10ppm (1000-9990 ppm)
ppt: 0.01 ppt (0.01 - 10.00 ppt)
• EC: µS: 0.1 µS (0 - 99.9 µS) / 1 uS (100 - 999 µS) / 10µS (1000-9990 µS)
mS: 0.01 mS (0.01 - 20.00 mS)
6. Data Storage: Up to 20 readings
7. Auto Shut-Off: After 5 minutes (While in Battery mode)
8. Alarm: Adjustable Set Point (See section 5)
9. Power Source: AC 110 V - 240V / Rechargeable Lithium Ion Battery
10. Service Environment: 0 - 50 °C / RH 80 %
11. Display: LCD Touch Screen controls with Auto Backlit lighting
12. Probe: ABS with Electrodes Conductivity Sensor / Single Junction Ag/AgCl pH Sensor
13. Sensor Cable: 2m (80 inch) shielded and Coaxial Cable
14. Dimensions: Approx. 8 x 4 x 1.4 inches / 20 x 11 x 3.6 cm
15. Weight: 15.2 oz (0.43 Kg) for body / 5 oz (140 g) for two probes (without case)
3
E. LCD Screen Display
F. Switch and Keypad Controls
pH Readings
Temp Readings
EC/TDS Readings
Saved Data Numbers
Touch Screen Buttons
Touch 3 seconds to change from the home screen mode to menu.
Quick touch to save readings while in the home screen mode.
Touch for 3 seconds to recall saved data.
Touch for 3 seconds to turn off back light or touch to turn light on.
Also used to save device settings and both measurement calibrations.
Raises numeric values when adjusting settings or calibration.
Also moves selection cursor up when in menu mode.
Lowers numeric values when adjusting settings or calibration.
Also moves selection cursor down when in menu mode.
Exits to the main menu when in menu mode.
Also cancels settings or calibration.
Turns the power on/off. Also changes the EC/TDS scale being used.
4
G. Icon Description
5
Changes to menu mode from the home screen
Calibration Mode Indicator
Alarm setting indicator and for making corrections
Alarm Delay Indicator
pH meter sensor is unstable
Device needs maintenance
Out of range alarm indicator
Recalls saved data and measurement readings
Saving data
Device is in charging mode
Battery life indicator
NaCl and 442 Conversion factor indicators
High and low alarm indicator
Alarm out of range
Arrow cursors in Menu Mode
pH readings indicator
Temperature scale Indicators
EC scale indicators.
TDS scale indicators.
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