Single point of in situ calibration online - a quick, easy choice
The method of calibration and adjustment of relative humidity instrument has many different kinds.Ideally, all instruments should be carried out in accordance with the standards in the official lab check, calibration and certification.But in reality,We have to balance time, cost, technical requirements, professional knowledge and the unique needs of each application.
Users often ask manufacturers recommended calibration interval.When considering how the frequency of the calibration instrument, it is a reasonable basic method.But in practice, by instrument operationThe influence of environmental conditions, the instrument performance degradation speed will be different, soSet the appropriate calibration intervalIt is very important.
In terms of calibration execution itself,Several ways for you to choose: you can set up your own calibration laboratory, will you send the third party for laboratory calibration instruments, or to perform on-site check online or online single point on the calibration.
Single point of on-site calibration using online not suspend the fixed installation of instrument operation and direct on the calibration standard of work, technical personnel to use handheld devices to check surface mount transmitter will comply with this standard of work.The main advantage of this method is that it is rapid and simple.Field instruments without downtime, also do not need to spend extra manpower to remove and reinstall.However,The defect of this method is lack of the second calibration pointTo indicate the correct dynamic response of the instrument.If measurement conditions remain stable in the short term, gentle breathing over the sensor and observe the response of the instrument and the recovery may be sufficient;But if the measurement conditions are very changeable, we recommend using multi-point calibration.
Visa pull HUMICAP handheld temperature and humidity meter HM70 specifically designed to check harsh humidity measurement in the application, is also used for visa fixed humidity instrument choice of on-site inspection and on-line calibration.The following HM70 transducer can be used for calibration: HMDW60/70, 71, HMDS/W20 HMW61 / / 30, HMP130, HMP230/240 series, 330 series, the series of HMM210 HMT320 / and DMW19 transmitter.
On-site calibration online, please make sure that reference to connect to the HM70 reference probe has been calibrated to read the readings of fixed transmitter inspection and adjustment.And industrial transmitter module (HMP230/240 series, 330 series and HMM210 HMT320 / module) of single point or two calibration can use visa pull MI70 indicator and visa HMK15 humidity calibration is performed.
In the video below, we will introduce how to use the visa HM70 for visa HMT330 perform a single point of on-site calibration and online adjustment.In here to view other HMT330 calibration alternatives.