No need to invest in new cables:
The "Compact MS" uses existing standard YSI® or Hydrolab® cables to connect to the NX7 PDA, or PC/Mac or a Datalogger
The "Compact MS” is a multi-tasking units. It can communicate at the same time with:
PC via RS232 and Datalogger via SDI-12
PDA via RS232 and Datalogger via SDI-12
Datalogger via RS232 and Datalogger via SDI-12
While the “Compact MS” is communicating in any of the above configurations, it's still capable of logging four files in its internal memory, even with overlapping start dates and without any interruption to live data being transmitted via RS232 or SDI-12
Communication modes supported by the “Compact MS”: RS-232, SDI-12, RS-485, Modbus and TTY
The “Compact MS” is based on the already proven Minisonde® design.
Available from HydroTech only
Following a request from our valued customers, HydroTech developed a new multiprobe that is specially designed for spot checking, deployment with an external datalogger, and laboratory use.
The “Compact MS” is based on the Minisonde® design with its communication platform, features, and sensors, but in a smaller package. It will operate with your computer via RS232, the SVR4A® Display, any PDA, and any datalogger. It is fully compatible with all your existing Hydrolab® or YSI® equipment and accessories.
Compact MS
- Is only 17” long and 1.75" in diameter, which makes it very portable.
- Fully compatible with the Hydrolab SVR4A® hand-held unit. There is no need to buy a new display if you have one.
- Supports SDI-12 communication protocol. It will easily connect to a datalogger like Sutron®, Handar®, Waterlog®, or any datalogger that uses SDI-12.
- Supports RS232 communication protocol. It will easily connect to a PC or PDA.
- Measures up to eight parameters simultaneously:
- Temperature in °C and °F,
- Conductivity in µS/cm and mS/cm
- Salinity in ppt
- pH
- Dissolved Oxygen in % saturation and mg/l
- ORP (Redox) in mV
- Depth in meters or feet
- Total dissolved gas “TDG” mmHg
- (Optional circulator for low flow measurement)
Specs Compact MS
- Size: Outer diameter: 1.75”/4.4 cm
- Length: 17”/43.18 cm
- Weight: 1.5 lbs/0.68 kg.
- Computer Interface: RS-232, SDI-12 and RS-485
- Memory: 120,000 measurements
- Operating Temperature: -5 to 50 °C
- Maximum Depth: 200 m
The Temperature sensor is a 30k ohm variable resistance thermistor.
The temperature sensor is included with every Hydrolab sonde.
- Range: -5 to 50 °C
- Accuracy: +/- 0.10 °C
- Resolution: 0.01 °C
The HydroTech Dissolved Oxygen sensor is based on a standard Clark cell design, which is EPA approved, and has been trusted for over 30 years. Solid state silver anode for extended operational life span.
Used in conjunction with a Titanium circulator for maximum performance in low-flow conditions.
- Range: 0 to 50 mg/l
- Accuracy: +/- 0.2 mg/L for 20mg/L or less, +/- 0.6 mg/L for over 20 mg/L
- Resolution: 0.01 mg/l
Optional Optical Dissolved Oxygen sensor:
- Range: 0 to 20 mg/L
- Accuracy: +/- 0.1 up to 8 mg/L ; +/- 0.2 above 8 mg/L
- Resolution: 0.01 mg/L
The Conductivity sensor uses four graphite electrodes in an open cell design.
- Range: 0-100 mS/cm
- Accuracy: ± (0.5% of reading + 0.001 mS/cm)
- Resolution: 0.001
The pH sensor uses a glass bulb and refillable reference electrode.
The ORP sensor uses a simple platinum band that donates or accepts electrons
to monitor chemical reactions, quantify ion activity, or determine the oxidizing or reducing properties of a solution.
pH:
- Range: 0 to 14 pH units
- Accuracy: +/- 0.2 units
- Resolution: 0.01 units
ORP:
- Range: -999 to 999 mV
- Accuracy: +/- 20 mV
- Resolution: 1 mV
Custom-made Pressure sensors with two range options.
- Range: 0 to 25m or 0 to 100m
- Accuracy: +/- 0.05 meters
- Resolution: 0.01 meters
The Total Dissolved Gas (TDG) sensor uses a pressure transducer mounted behind a rigid gas-permeable silicone membrane to measure the amount of total gaseous compounds dissolved in a liquid. Maximum water depth is 25 m.
- Range: 400 – 1300 mmHg
- Accuracy: +/- 0.1% of span
- Resolution: 1.0 mmHg
The Titanium Circulator allows enough flow through the dissolved oxygen membrane even in zero flow condition for more accurate DO measurement. The Titanium Circulator is fully sealed with o-rings and can be serviced if needed.
Most common questions and answers:
Q: Does the Compact MS use the same communication protocol as the Minisonde®?
A: Yes. The Compact MS uses the same firmware as the Minisonde® with all its features.
Q: Does the compact MS replace the standard Minisonde®?
A: No. The compact MS is specialy design for spot checking and use with a datalogger.
Q: Can I use the Hydras 3 LT to communicate with the Compact MS?
A: Yes.
Q: Can I use the Hydras 3L Pocket software with the Compact MS?
A: Yes.
Q: Can I use my existing Hydrolab® cables to connect to the Compact MS?
A: Yes. The standard Compact MS comes with the standard Hydrolab® 6 pin bulkhead connector.
Q: I do not like the standard Hydrolab® 6 pin bulkhead connector, can the Compact MS be fitted with a YSI® type connector?
A: Yes. The "Compact MS" can be fitted with an optional YSI® type bulkhead connector with recessed pins for maximum ruggedness and it will work with your existing YSI® cables.
Q: Does the Compact MS have internal memory?
A: Yes, it has enough internal memory for 120,000 measurements.
Q: Can the Compact MS be fitted with an internal battery pack?
A: Yes. We call the "Compact MS" with internal battery pack a "Compact DS"
B. The Compact DS is equipped with a 6 AA internal battery pack. The final length is 18" x 2.6" in diameter.
Q: Does the Compact MS require internal batteries when used with the SVR4A®?
A: No, the Compact MS does not require an internal battery pack when used with the SVR4® display.
Q: Does the Compact MS require internal batteries when used with the NX7-B PDA?
A: No, the Compact MS does not require an internal battery pack when used with the NX7-B PDA.
Q: Does the Compact MS require internal batteries when used with a computer ?
A: When used with a computer, the Compact MS does require external power or an internal battery pack.
Q: When connected to a Datalogger, can the Compact MS still log data internally ?
A: Yes. The Compact MS can perform all the following tasks simultaneously:
- Communicate with a PC or Handheld unit via RS232 or RS422
- Communicate to a datalogger via SDI-12 or RS232
- Log data to its internal memory up to 4 files at a time, even with overlapping dates
Q: What sensors configuration can I have on the Compact MS?
A: The Compact MS unit comes standard with temperature and conductivity/Salinity/TDS sensors and you can add any combination of the following sensors:
- pH
- Disolved Oxygen (Clark DO or Optical DO)
- ORP (Redox)
- Depth (25 or 100 m)
- Total dissolved gas “TDG” mmHg
- (Optional circulator for low flow measurement for Clark DO only)
For a quote please email your request to sales or call 512-846-2893