- sx731 portable ph/orp/conductivity meter
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measurement of parameters such as ph, orp, conductivity, tds, salinity, resistivity and temperature of water solution, the most cost effective portable analytical instrument.
| ● multi-parameter meter, equipped with ph electrode, orp electrode and conductivity electrode, automatic identification of electrode by meter. |
| ● built-in microprocessor chips, intelligent functions such as automatic calibration, automatic temperature compensation, data storage, function set-up, self-diagnose information, automatic power-off and low voltage display. |
| ●automatic identification of 13 ph standard buffer solutions, three options of standard buffer solutions: europe and america series, nist series and china series. |
| ●able to set ph measurement modes of high purity water and pure water with ammonia. |
| ● automatic identification of 8 conductivity standard calibration solutions, two options of standard calibration solutions: europe and america series and china series. |
| ● adopt advanced conductivity measurement technology, use conductivity electrode of constant k=1, only need one point calibration and meet the measurement precision requirement of 0.5μs/cm ~ 200 ms/cm. |
| ● ability to switch among conductivity, tds, salinity and resistivity. multinomial calculation for tds and salinity to ensure the conversion precision of the full scale. |
| ● conductivity measurement mode has the function of non-linear temperature compensation for high purity water. |
| ● meter meets ip57 rating, equipped with calibration solution and portable case. |
| category | product name | basic features and specifications |
| ph |
measuring range |
（-2.00 ~ 19.99）ph |
|
resolution |
0.1/0.01 ph | |
|
accuracy |
meter:±0.01ph; overall: ±0.02ph | |
|
input current |
≤2×10-12 a | |
|
input impendance |
≥1×1012 ω | |
|
stability |
±0.01 ph/3h | |
| temp. compensation range | （0 ~ 100）℃(automatic) | |
| orp |
measuring range (mv/orp/eh) |
-1999mv ~ 0 ~ 1999mv |
|
resolution |
1mv | |
|
accuracy |
meter:±0.1% fs, overall: ±15mv | |
| conductivity | measuring range | conductivity：（0.00~19.99）μs/cm （20.0~199.9）μs/cm （200~1999）μs/cm （2.00~19.99）ms/cm （20.0~199.9）ms/cm tds: （0 ~ 100）g/l salinity： （0 ~ 100）ppt resistivity：（0 ~ 100）mω·cm |
|
resolution |
0.01/0.1/1μs/cm 0.01/0.1 ms/cm | |
| accuracy | meter:±1.0% fs, overall:±1.5% fs | |
|
temp. compensation range |
（0 ~ 50）℃(manual) | |
|
electrode constant |
0.1 / 1 / 10 cm-1 | |
|
benchmark temperature |
25℃、20℃ and 18℃ | |
| other technical parameters |
data storage |
200 groups |
| storage content | series number, measuring value measuring unit and temperature, | |
|
power |
two aa batteries (1.5v x2) | |
|
size and weight |
meter：(65×120×31)mm/180g；suitcase： (360×270×76)mm/1.6kg | |
| quality and safety certification | iso9001:2000, ce and cmc | |
| working condition |
environment temperature |
5 ~ 35 ℃（0.01grade） |
|
environmental humidity |
≤85% | |
|
ip rating |
ip57 dustproof and waterproof |
| 1. model sx731 ph/orp/conductivity meter | 1set |
| 2. 201t-s plastic ph/atc three-in-one combined electrode | 1pcs |
| 3. 301pt-s plastic orp combined electrode | 1pcs |
| 4. 2301-s plastic conductivity electrode | 1pc |
| 5. ph standard buffer solution(ph4.00, ph7.00 and ph10.01/50ml) | 1btl/each |
| 6. 1413μs/cm conductivity standard solution (50ml) | 1bottle |
| 7. screw driver | 1pcs |
| 8. spare aa batteries | 2pcs |
| 9. operation manual | 1pcs |
| 10. carrying case | 1unit |
|
accessory category |
description |
specifications |
|
ph combination electrode |
201t-s plastic three-in-one ph electrode |
measure ph and temperature simultaneously, atc, suited for general ph measurement, 8 pin conncetor. |
|
2503dt-s glass three-in-one combintion ph electrode |
atc, suited for ph measurement of solution under low temperature and pure water, 8 pin connector. | |
|
glass flow cell |
match 2503dt-s electrode. | |
|
orp combination electrode |
301pt-s plastic orp combination electrode |
class="tdbg01"
suited for general orp measurement, 8 pin connector. |
|
conductivity electrode |
2301-s plastic conductivity electrode |
k=1.0 cm-1，atc, suited for conductivity measurement of general water solution, 8 pin connector. |
|
djs-0.1-s glass conductivity electrode |
k=0.1cm-1，atc, suited for ph measurement of of high purity water, 8 pin connector. | |
|
glass flow cell |
match djs-0.1-s electrode. | |
|
ph buffer |
ph4.00 buffer |
500ml/250ml/50ml（bottle） |
|
ph6.86 buffer |
500ml/250ml/50ml（bottle） | |
|
ph9.18 buffer |
500ml/250ml/50ml（bottle） | |
|
ph7.00 buffer |
500ml/250ml/50ml（bottle） | |
|
ph10.01 buffer |
500ml/250ml/50ml（bottle） | |
|
conductivity standard |
84 μs/cm conductivity standard |
500ml/250ml/50ml（bottle） |
|
1413 μs/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
12.88 ms/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
146.6 μs/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
1408 μs/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
12.85 ms/cm conductivity standard |
500ml/250ml/50ml（bottle） | |
|
electrode soaking solution |
ph（orp）combination electrode soaking solution |
500ml/250ml/50ml（bottle） |
|
orp standard solution |
222 mv orp standard solution |
250ml/100ml/50ml（bottle） |
|
portable case |
small portable case（255×210×50）mm |
match single electrode. |
|
big portable case（360×270×76）mm |
match multi- electrode |
