Testomat 808 SiO₂ Silica Limit Analyzer (0.3–1.2 mg/L)
In Turkey, Mikron Proses supplies the Testomat 808 SiO₂ silica limit analyzer as the Turkey solution partner for Heyl Neomeris Testomat and Titromat online analyzers, covering model selection, sales, commissioning, calibration and reagent supply. The unit flags silica breakthrough in demineralizer and EDI feed lines inside a 0.3–1.2 mg/L limit window; it is a limit switch, not a continuous ppb trend analyzer.
Measurement principle and limit window
The Testomat 808 SiO2 is a limit-value analyzer. It automatically monitors adjustable silicate limits in the 0.3–1.2 mg/L measuring range and works in automatic interval operation, with an adjustable interval pause of 0–480 minutes. Status and error messages are output on a 0/4-20 mA current interface, and a relay with a contact load of 230 V / 4 A AC (resistive) is available for external alarm or valve control. Because it is a limit switch, the device is not suitable for continuous ppb-level process trending.
Technical data
| Parameter | Value |
|---|---|
| Limit range | Adjustable silicate limit within 0.3 – 1.2 mg/L SiO2 |
| Interval operation | Automatic; interval pause adjustable from 0 – 480 min |
| Outputs | Relay, contact load 230 V / 4 A AC resistive; 0/4-20 mA status and error output |
| Sample pressure | 1 – 4 bar (0.3 – 1 bar low-pressure version available) |
| Sample temperature | 10 – 40 °C |
| Power supply | 24 / 115 / 230 VAC, 50–60 Hz (depending on version) |
| Unattended operation | Weekend operation monitoring through 72 hours without supervision |
Applications
Demineralizer silica breakthrough. In ion-exchange demineralization, silica is the weakest anion and the earliest to break through the anion bed. Mounting the Testomat 808 SiO2 at the anion outlet with a setpoint chosen from the plant's silica limit (inside the 0.3–1.2 mg/L window) can trigger regeneration before silica slips into downstream storage. For a broader comparison of methods, see the silica measurement guide.
EDI protection. The Heyl Neomeris catalogue lists monitoring of EDI equipment as an application area. The Ionpure feed-water limit for silica is below 1.0 ppm SiO₂ for LX (manual IP-MAN-LX-0426), MX and VNX-Max/VNX-Mini modules; the VNX manual (IP-MAN-VNX-0526) gives 0.5 ppm for VNX-Ultra and VNX-EX and 0.2 ppm for VNX55-E. A setpoint below the module limit, for example 0.5 mg/L against a 1.0 ppm limit, gives early warning of upstream membrane aging or changing raw-water chemistry. Refer to the EDI system selection guide for feed-quality requirements.
Sterilizer and autoclave water in hospitals. The Heyl Neomeris catalogue names sterilizers and autoclaves in hospitals as an application area. Silicate in feed water can leave staining and insulating deposits on instruments and sterilizer chambers. The analyzer performs limit checks and can run unattended for up to 72 hours.
Field validation. For spot measurements outside the 0.3–1.2 mg/L window, the Pyxis SP-800 handheld colorimeter covers 0.02–5.00 ppm SiO2 (low range). This combination supplies both automatic limit switching and portable verification. Details are given in the handheld water analyzer guide.
How Mikron Proses helps
Mikron Proses selects the installation point (anion outlet, RO permeate, or autoclave loop), sets the limit inside the 0.3–1.2 mg/L window, and handles commissioning, calibration, and reagent supply. When a project requires continuous ppb-level trending instead of limit switching, Mikron Proses selects a suitable unit from its online analyzers range. For the wider Testomat and Titromat family, see the Testomat brand page.
For setpoint advice, commissioning, and reagent schedules, contact Mikron Proses through the contact page.
Frequently Asked Questions
Technical answers from Mikron Proses.
Who supplies the Testomat 808 SiO2 in Turkey?
Mikron Proses is the Turkey solution partner for Heyl Neomeris Testomat and Titromat online analyzers; model selection, sales, commissioning, calibration and reagent supply. Export buyers can request a quotation through the contact page.
Is the Testomat 808 SiO2 a continuous trend analyzer?
No, it is a limit-value analyzer that works with adjustable limits in a 0.3–1.2 mg/L window. It reports status and errors on a 0/4-20 mA output and offers a relay output (230 V / 4 A AC resistive). For high-pressure turbine boiler projects that require continuous ppb-level trend data, Mikron Proses selects a different online analyzer.
How does the Testomat 808 SiO2 detect silica breakthrough in a demineralizer?
Silica is the earliest impurity to break through an anion exchange bed. The analyzer samples the demineralizer outlet and signals through its status output and relay when the adjustable limit is exceeded. The setpoint is chosen from the plant's silica limit, and a low setting within the window signals the need for resin regeneration before downstream water quality degrades.
Can the Testomat 808 SiO2 be used for hospital sterilizer and autoclave water?
Yes, the Heyl Neomeris catalogue lists sterilizers and autoclaves in hospitals as an application area. The analyzer checks that the silica limit is not exceeded, which helps avoid insulating silica deposits on instruments and sterilizer chambers. The unit supports up to 72 hours of unattended operation.
What sample conditions and power does the Testomat 808 SiO2 require?
Sample pressure is 1–4 bar, with a 0.3–1 bar low-pressure version available; above 4 bar a pressure reducer is used. Sample temperature must be 10–40 °C, and power is 24 / 115 / 230 VAC, 50–60 Hz depending on version.
Planning a project? Send us your flow rate, feed water source and target water quality to [email protected] — our engineers will reply with a technical proposal.